recommendatory urban bus specifications ii

Recommendatory

Urban Bus Specifications – II

Ministry of Urban Development

Government of India

www.moud.gov.in

April, 2013


Government of India

www.moud.gov.in

April, 2013

Recommendatory


Minister of Urban Development

Government of India

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Urban Bus Specifications - II 104&lh] fuekZ.k Hkou] ubZ fnYyh&110008] Qksu % 23063495] 23061162 QSDl % 23062089

104 – C, Nirman Bhawan, New Delhi – 110108, Ph: 23063495, 23061162, Fax: 23062089

MESSAGE

Urban transport has increasingly played a key role in making rapidly growing cities livable and sustainable. Sensitivity to

local context and scientific evaluation of available alternatives lies at the core of an efficient public transport system. At the same time,

the soft aspects like access to information, experience of journey and customer satisfaction play an important role in attracting and

retaining users to the system. A proactive branding and communications plan adds significantly to the system image.

As we approach the second phase of JnNURM, the Ministry of Urban Development continues to make constant efforts to

push the reforms agenda and delivery of urban infrastructure. One such initiative is to revisit the Urban Bus Specifications (introduced

in JnNURM – I) to help cities procure and run modern city buses. This document – “Urban Bus Specifications – II” lays out standards

for cities to base their choice from a definite set of options for streamlining bus operations. The specifications also include those for buses

for BRTS (Bus Rapid Transit Systems) as more and more cities embrace the concept, underpinning the need for standardization.

The specifications are prepared in consultation with the industry, academia and state transport undertakings. I congratulate

the Urban Bus Committee for successfully creating these standards that are bound to bridge the gap between user expectations and the

bus services.

(Kamal Nath)


Nirman Bhawan, New Delhi - 110008

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Dr. Sudhir

Krishna

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Secretary to the Government of India



FOREWORD

India’s urban population is going to nearly double by 2030. This comes as a challenge to cities that are already facing acute

shortage of quality urban transport. To ease this situation and move towards creation of sustainable infrastructure, Govt. of India launched

JnNURM in 2005. Acknowledging that urban transport was a key sector that needed significant interventions, the National Urban Transport

Policy (NUTP) was introduced in 2006 to guide the efforts by cities towards sustainable transportation systems and urban development. The

policy very clearly stated that the focus is to promote movement of people over vehicles, and recommended good quality public transport in

medium and large cities.

The current investments in public transport, especially city bus services are far from adequate to meet the emerging demand. The

High Powered Expert Committee on Urban Infrastructure and the MoUD estimated that cities in India need about 1.5 lakh buses amounting to

approximately Rs. 60,000 crores in the next 20 years. The report further cites that only 20 of 85 cities with over 0.5 million population (2009)

offer a organised city bus service. The recommendations of the Working Group on Urban Transport for 12th Five Year Plan include introduction

of organized public transport in all 2 lakh+ population cities and state capitals, as one of its goals. The report asserts that city bus services have

been and will continue to be the major mode of public transport in Indian cities. It was recommended that the buses be procured as per urban

bus specifications and managed by a special purpose vehicle. The service level benchmarks for urban transport also direct that the fleet meets

urban bus specifications.

The Ministry of Urban Development introduced Urban Bus Specifications in 2008 in view of the increased need for funding and

guidance to cities in procurement of city buses. Under the 2nd economic stimulus package of the Government of India, 61 cities procured about

13400 buses under JnNURM and in the process and brought forth some lacunae and gaps in the urban bus specifications.



The Ministry of Urban Development reached out to various stakeholders to identify potential issues to be resolved for going

forward and found that cities were operating very different types of buses across the country. These buses were often retrofitted to

accommodate modern technology (IT systems). The development of prototypes as per city’s specifications took a long time, thus delaying

procurement. Most cities did not follow any standardized maintenance manuals and codes of practice. A key learning was that inadequate

detailing of specifications created complexities in tendering process that cities were not prepared for.

In an attempt to address these issues and facilitate the process of bus procurement in anticipation of next round of funding under

JnNURM-2, MoUD constituted an Urban Bus Committee in March, 2012. The committee worked towards revising the existing urban bus

specifications to achieve uniformity in the bus manufacturing industry with minimal variants for a city to choose from. Additional objectives

included consideration for driver and passenger comfort, enhanced safety, universal design, in-built ITS technology etc. The specifications also

incorporate desired standards for reduced pollution and improved fuel efficiency. New variants to attract premier customers and specialised

buses for BRTS have been introduced.

These specifications are applicable to buses for urban operation defined as a vehicle intended for operations within the confines

of a city or a greater metropolitan area. Such operations are associated with frequent stops/starts and the bus for urban bus operations is

designed and constructed accordingly with space for standing passengers. It is intended that the specifications contained in this document will

apply to all urban bus services in the country irrespective of their sources of funding. The anticipated benefits of this publication are:

Attracting choice riders to use public transport including people with disabilities

Better working environment for drivers

Driver training and introducing customer care & complaints redressal system

Focus on R&D to improve product quality to meet stringent safety tests

Bringing efficiencies in the operations and maintenance practices

Leveraging benefits of contractual bidding for procurement process

I encourage all STUs/transport authorities/SPVs/operators and other organizations associated with urban transport to use these standards and to

facilitate comfortable, affordable, safe and reliable public transport system in cities.

Dated: April, 2013 (Dr. Sudhir Krishna)


Nirman Bhawan, New Delhi - 110008

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S. K. Lohia

OSD (UT), Ex. Officio, JS, MoUD

PREFACE

The National Urban Transport Policy (NUTP), 2006, outlines the need to create and maintain safe, affordable, rapid, comfortable, reliable and

accessible public transport in cities in India. In the discussion of available technologies for achieving sustainable public transport, the policy advocates bus based

systems. However, it was soon realized that the city buses in India suffer from a poor brand image, low on passengers, not ITS enabled and poor on ergonomics.

Taking cognizance of the need to focus on comfort, safety, reliability and efficiency of bus based public transport system in urban areas; Ministry of Urban

Development (MoUD) recommended “Specifications for Urban Buses in 2008 for the first time in India.

While approving the funding for purchase of urban buses for the mission cities under JnNURM, the urban bus specifications were made

mandatory. Consequently, these specifications facilitated the procurement of more than 13400 ITS enabled modern buses across 61 cities in India, thereby

changing the landscape of bus based public transport in the country. Today these specifications have been widely accepted within the industry.

MoUD received invaluable feedback from stakeholders on the urban bus specifications. Some of the key learning were: the need to reduce

number of variants through greater degree of standardization; ITS specifications should be integral to the bus specifications; greater focus on driver as well as

passenger comfort; more detailing of specifications and need for separate specifications for BRT buses as well as premium category buses.

With a view to synthesize the above learning and provide further impetus to a responsive bus based public transport systems in urban areas there

was a need to revise the urban bus specifications. Accordingly, MoUD on March 14, 2012 constituted a Committee to revise the urban bus specifications. The

objectives of the Committee for revision of the urban bus specifications were:

Focus on the comfort and ride quality for passengers and drivers

Enhanced safety features including accessible for persons with disability

Standardisation of bus features

Adoption of cutting edge technology integrated with ITS

Reduction in bus feature variants

Improved fuel efficiency

Separate specifications for buses for BRT operations

Introduction of new variants- premium, articulated and bi-articulated buses



Special emphasis has been given to the safety of the women passengers while deciding the specifications. Features like wider windows, lighting, CCTV cameras,

inner signage displaying helpline number, ‘foot operated micro pedal switch for emergency’ to communicate to control room, two way communication of driver

with control room and automatic vehicle location system (AVL) have been added as part of UBS-II. Moreover, features like ‘manual ramp’ & ‘exclusive space’

for wheel chair, ‘buzzer for stop request’ will make these buses more accessible for passengers with disability.

The Committee comprised members from (i) M/o Road Transport & Highways, (ii) D/o Heavy Industries, (iii) Delhi Transport Corporation (DTC), (iv) Bureau of

Police Research and Development (BPR&D), (v) Bangalore Metropolitan Transport Corporation (BMTC), (vi) Society of Indian Automobile Manufacturers

(SIAM), (vii) Association of State Road Transport Undertakings (ASTRU), (viii) Indian Association of Bus Manufacturers (IABM), (ix) Automotive Research

Association of India (ARAI), (x) Central Institute of Road Transport (CIRT), (xi) Institute of Urban Transport (IUT) (xii) Urban Mass Transit Company (UMTC)

and (xiii) Centre of Excellence CEPT, Ahmedabad. The Committee also set up Core Group to assist the Committee in researching and drafting the specifications

in consultation with industry experts, bus manufacturers, vendors, suppliers etc.

The Committee, cognizant of the lead time, required to implement advancements in bus technology and the related development costs has

prepared a road map for upgrading of specifications. The revised urban bus specifications have identified certain technology advancements which will come into

effect from April 1, 2015. The advantage of such a road map is that it obviates the need for frequent revision of the standards and specifications and helps bus

manufacturers to focus their R&D activities in a pre-charted direction.

National level stakeholders consultations on the draft revised specifications were held on 7th September, 2012 at Ahmedabad and on 1st October,

2012 at New Delhi and after considering the suggestions, feedback and inputs from various stakeholders the Committee has finalized the Urban Bus

Specifications II.

This exercise is a collective work of representatives from various Ministries, Automobile Industry, ITS Manufacturers, Research Institutes,

Associations and Experts. I sincerely thank all the members of “Urban Bus Committee” and “Core Group”, especially Mr. Ajai Mathur & Mr. Laghu Parashar

from UMTC Ltd, Prof. Shivanand Swamy & Prof. Manjiri Akalkotkar from CoE, CEPT University and Mr. A.S. Lakra, former Director, CIRT, Pune for their in-

depth involvement throughout this exercise. I am also thankful to officials from various State Governments for giving their valuable suggestions during

stakeholders workshops. I am grateful for the support and guidance received from Dr. Sudhir Krishna, Secretary, Ministry of Urban Development, Government of

India who has also been instrumental in supporting at all steps. I am also grateful to Shri Kamal Nath, Hon’ble Minister for Urban Development for providing the

vision and leadership in changing the face of urban transport in India. I strongly believe that these specifications for urban buses will give a fillip to our endeavor

to transform the urban transport scenario in the country so that public transport can be marketed as a ‘Branded product’ and public transport becomes a preferred

and safe mode of transport for all.

Dated: April, 2013 (S. K. Lohia)

Table of Content Abbreviations……………………………………………………………………………………………………....................... (i)

Chapter 01 – Scope, purpose and definitions…………………………………………………………………....................... 01

Chapter 02 – Specifications for standard size bus……………………………………………………………....................... 03

Chapter 03 – Specifications for mini and midi bus………………………………………………………………………….. 18

Chapter 04 – Specifications for standard size BRT bus……………………………………………………………………... 37

Chapter 05 – Specifications for mini and midi BRT bus……………………………………………………………………. 54

Chapter 06 – Specifications for standard size bus of premium segment……………………………………..................... 72

Chapter 07 – Specifications for midi bus of premium segment…………………………………………………………….. 96

Chapter 08 – Specifications for articulated bus for guidance………………………………………………………………. 118

Chapter 09 – Specifications for Bi-articulated bus for guidance…………………………………………………………… 139

Chapter 10 – Specifications for Intelligent Transport Systems (I.T.S.)…………………………………………………….. 161

Annexure 1 – Windshield designs

Annexure 2 – Figures

Annexure 3 – Design Type Approval

Annexure 4 – Test procedure for evaluation of AC system performance

Annexure 5 – List of participants of “Urban Bus Committee”

Abbreviations (Used in Bus Specifications)

ABS Acrylonitrile Butedienestyrene

ABS Anti skid anti brake locking system

A.C. Air Conditioned

ACX Air Conditioned Deluxe

AIS Automotive Industry Standards

AIS052 Code of Practice for Bus Body Design and Approval (Revision 1): 2008

ASTM American Standard for Testing of Materials

BIS Bureau of Indian Standards

BRTS Bus Rapid Transit System

BS Bharat Stage

C/L Centre Line

CCTV Closed Circuit Television

CLC Cabin Luggage Carrier

CMVR Central Motor Vehicle Rules

CNG Compressed Natural Gas

dbA Decibels on scale A

DC Direct Current

DIN German Standards

EBS Electronic Braking control System

ECAS Electronically Controlled Air Suspension

ELR Emergency Locking Retractors

EMS Electronic Engine Management System

ERW Electric Resistance Welding

g gram

gms/cc grams per cubic centimetre

GSR General Statutory Rules

GVW Gross Vehicle Weight

HP Horse Power

Ht. Height

Hz Hertz

ICE Internal Combustion Engine

IS Indian Standards

ISO International Organization for Standardization

ITS Intelligent Transport System

JASO Japanese Automotive Standards Organization

Kg/m3 kilogram per cubic metre

Kg Kilogram

Km Kilometers

Kmph Kilometres per hour

Kmpkg Kilometre per kilogram

Kmpl kilometre per litre

LDPE Low Density Poly-ethylene

lux unit of illumination

m/s metre per second

MDI Methylene Diphenyl Di-isocyanate

mm millimetre

NBS National Bureau of Standards

NDX Non Deluxe

NVH Noise Vibration and Harshness

oC degree Celsius

pax Passenger

PPLD Poly Propylene Low Density

PU Poly Urethane

PVB Polyvinyl butyryal

PVC Poly Vinyl Chloride

PwD People with Disability

RE bus Rear Engine bus

RMS Root Mean Square

rpm Revolutions per Minute

SAE Society of Automotive Engineers

SPV Special Purpose Vehicle

Sq.mm Square millimetre

STU State Transport Undertaking

ULSD Ultra-Low-Sulphur diesel

VM Vehicle Manufacturer

2G Second Generation

3G Third Generations

AIS Automotive Industry Standard

AMPS Advanced Mobile Phone System

API Application Programming Interface

ARAI Automotive Research Association of India

AV Audio-Video

AVI Audio Video Interleave

AVL Automatic Vehicle location System

BDC Bus Driver Console

BIS Bureau of Indian Standards

Bit Binary digit

BRTS Bus Rapid Transit System

CAN Controller Area Network.

CCC Central Control Centre

CCD Charge Coupled Device

CIRT Central Institute for Road Transport

CMVR Central Motor Vehicles Rules

COP Conformity of Production

CPU Central Processing Unit

dBm Power ratio in decibels

DC Direct Current

DCS Digital Cellular Service

oC degree Celsius

DTC Diagnostic Trouble Code

DVI Digital Visual Interface

DVR Digital Video Recording

EEPROM Electrically Erasable Programmable Read-Only Memory

EMC Electro Magnetic Compatibility

FME (F) For Mobile Equipment Female

FPS Frames per Second

GB Giga Byte

GPGGA Global Positioning System Fix Data

GPGSA Global Positioning Overall Satellite data

GPGSV Global Positioning Satellites in view

GPIO General Purpose Input Output

GPRMC Global Positioning Recommended Minimum Data

GPRS General Packet Radio Service

GPS Global Positioning System

GPVTG Global Positioning Vector track and Speed over the Ground

GSM Global System for Mobile Communications

HDMI High-Definition Multimedia Interface

Hz Hertz

IEC International Electro technical Commission

IEEE The Institute of Electrical and Electronics Engineers

Abbreviations (Used in I.T.S. Specifications)

IP Ingress Protection

IP Internet Protocol

IR Infra Red

ISI Indian Standards Institute

ISM Industrial Scientific and Medical

ISO International Organization for Standardization

ITS Intelligent Transport System

Kb Kilobit

LAN Local Area Network

LAT Latitude

LCD Liquid Crystal Display

LED Light Emitting Diode

LONG Longitude

ma Milliamps

MB Mega Byte

mCd milli Candela

MoUD Ministry of Urban Development

NAT Network Address Translation

NDA Non-Disclosure Agreement

nm Newton Meter

NMEA National Marine Electronics Association

OBITS On Bus Intelligent Transport System

OEM Original Equipment Manufacturer

PA Public Announcement System

PAL Phase Alternating Line

PCB Printed Circuit Board

PCS Personal Communications Service

PGN Parameter Group Number

PID Parameter Identifier

PIS Passenger Information System

PLCC Plastic Leaded Chip Carrier

PWD Person with Disability

PWM Pulse Width Modulation

RAM Random Access Memory

RHCP Right Hand Circular Polarization

RMS Root Mean Square

RPM Revolutions Per Minute

SCN Security Camera Network System

SCU Single Control Unit

SMA (M) ST Sub Miniature version A Male Straight

SMT Surface Mount Technology

SPN Standardized Message name,

TA Type Approval

TCP/IP Transmission Control Protocol/Internet Protocol

TCP Transmission Control Protocol

TFT Thin film transistor

Typ Typical

UBS Urban Bus Specification

UMTS Universal Mobile Telecommunications System

UV Ultraviolet

VGA Video Graphics Array

VHMD Vehicle Health Monitoring and Diagnostics

VSWR Voltage Standing Wave Ratio

WLAN Wireless Local Area Network

XML Extensible Markup Language

SD Secure Digital

Abbreviations (Used in I.T.S. Specifications)

Scope, Purpose and Definitions

Chapter - 01


Urban Bus Specifications – II, Ministry of Urban Development, Government of India 1

Scope & Purpose

With introduction of the National Urban Transport Policy (NUTP) in April 2006, the Government of India endorsed the idea that it’s essential

for the country to work towards building of sustainable transport infrastructure. The policy outlines the need to create and maintain safe,

affordable, rapid, comfortable, reliable and accessible public transport in cities in India. In the discussion of available technologies for achieving

sustainable public transport, the policy promulgates bus based systems. It was also realized that the bus based public transport systems are

operating in various arrangements in different cities and lack any kind of standardization.

The Ministry of Urban Development (MOUD) recognized the need and introduced specifications for urban buses in 2008. Based on this

experience, the Ministry took feedback from various stakeholders and formulated an ‘Urban Bus Committee” in March 2012 to address these

issues. The committee revised urban bus specifications to achieve uniformity in the bus manufacturing industry with minimal variants.

The Ministry of Urban Development, Government of India hereby formulates the following specifications and standards that have to be

complied with by the relevant category of buses used in urban bus services:

1. Standard bus -(A/C and Non AC)

2. Mini bus-(A/C and Non AC)

3. Midi bus -(A/C and Non AC)

4. Premium Standard Bus Segment –A/C

5. Premium Midi Bus Segment –A/C

6. Bus Rapid Transit System

a. 12 m standard BRT bus

b. 18 m articulation BRT bus for guidance only

c. 24 m Bi-articulated BRT bus for guidance only

d. Mini Bus

e. Midi Bus

7. Intelligent Transport System (I.T.S)



These specifications are applicable to the buses for urban operation means “a vehicle intended for operations within the confines of a city or a

greater metropolitan area. Such operations are associated with frequent stops/starts and the bus for urban bus operations is designed and

constructed accordingly with space for standing passengers".

This document aims to enhance the attractiveness of buses used to provide urban services in order to encourage increased usage, with a

particular emphasis on improving accessibility for all users, including people with physical, sensory and cognitive impairments.

Definitions

Unless otherwise specified, definitions of terms used in this document shall be as per AIS-052, Code of Practice for Bus Body Design and

Approval or The Central Motor Vehicles Rules (CMVR), 1989, as applicable.

Chapter - 02

Specifications for Standard size bus

Specifications for Standard Bus


Bus specifications of standard size urban bus (AC/Non-AC)

S. No. Description Specifications

Bus characteristics Maximum floor height: 400/650/9001 mm

Definition of Low Floor area

Low floor area shall not be less than 50% of the total saloon area

(excluding front wheel boxes and driver’s cab) and shall not be ramped

in the longitudinal plane

1 Propulsion system ICE, electrical, hybrid, fuel cell

2 Fuel-options Fuel to be compatible with propulsion system & prescribed emission

norms

3 Engine

3.1 Engine HP sufficient to provide:

a Rated performance at GVW in a stop/start urban operations Geared maximum speed without speed limiter to be 75 kmph

b Acceleration (metre/sec²) ≥ 0.8

c Attain bus speed of 0-30 kmph in seconds ≤ 10.5

d Maximum speed Geared maximum speed without speed limiter to be 75 kmph

e Grade ability from stop at GVW 17%

f Rated HP/torque preferably at lower rpm range Maximum engine torque required at lower range of RPM and spread

over a wider range of RPM

g Power requirements for Air conditioning system, ITS etc Required

3.2 Emission norms BS III/BS IV or latest as applicable

3.3 Engine management Engine oil pressure, engine coolant temperature, engine speed in RPM,

vehicle speed, diagnostic details message (engine specific)

3.4 Engine operational requirements

Engine should be able to operate efficiently at ambient temperatures of

approximately 0° to 50° C, humidity level from 5% to 100%, and

altitude levels of up to 2000 meters, generally operating in the semi arid

zone/hilly region prevailing in the area.

1 Cities having population ≤ 1 million (as per census 2011) can procure buses having 900 mm floor height also whereas cities having population more than 1 million (as per

census 2011) will procure either 650mm or 400mm floor height buses. Any change in composition is subject to approval of Ministry of Urban Development (MOUD), GOI. W.E.F. 1.4.2016, 900mm floor height standard size buses are to be procured only as an exception in all cities ≤ 1 million populations also.






3.5 Engine location Optional

3.6 Transmission Purchaser to select any one transmission system. However, rear engine

buses to have either automatic or automated manual transmission system

only. (any bus delivered after 1st April, 2015 will mandatorily have

either automatic or automated manual transmission system)

a Automatic with torque convertor. Neutral during stops

b Automated manual

c Manual - synchromesh - forward speeds (minimum 5) &

constant mesh on reverse gear

4 Operational safety

Transmission system to be fitted with a mechanism which makes it

possible to engage reverse gear only when vehicle is stationary

(applicable for automatic & automatic manual transmission)

5 Clutch (where applicable) Dry, single plate, power assisted operation

5.1 Rear axle Single reduction, hypoid gears, full floating axle shafts with optimal

gear ratios suitable for urban operations

5.2 Front axle Heavy duty reverse Elliot type axle suitable for various floor heights

6 Steering system Hydraulic power steering with height and angle adjustment

7 Suspension system2 Pneumatic

7.1 Front Air bellows - 2 numbers

7.2 Rear Air bellows – 2/4 numbers

7.3 Kneeling applicable in case of air suspension

(required only for 400 mm floor height buses) 60 mm entry/exit side severally & collectively

7.4 Anti roll bars/stabilizers3 Both front and rear

7.5 Shock absorbers Hydraulic double acting 2 at front & 2/4 at rear

2 Only in case of 900 mm floor height buses, front suspension can have option of air suspension/independent/parabolic/weveller type. Irrespective of the type of

suspension, floor level of bus should not go beyond maximum floor height. Any bus delivered after 1st April, 2015 will mandatorily have air suspension or superior in both front & rear. 3 Optional in case of independent suspension






7.6 Controls (optional) Electronically controlled air suspension system

8 Braking system

Dual circuit full air brakes, with preferably disc type arrangement for

front and drum at rear brakes. Graduated hand controlled, spring

actuated parking brakes acting on rear wheels (any bus delivered after

1st April, 2015 will mandatorily have disc brake in front)

8.1 Anti skid anti brake locking system (ABS) As per CMVR

8.2 Electronic controls Optional

9 Electrical system 24 volt DC

9.1 Batteries:

Low maintenance type lead acid batteries for 24 V system- performance

as per BIS:14257-1995 (latest). 2*12V of commensurate capacity.

Maintenance free batteries preferred.

9.2 Self starter 24V

9.3 Alternator 24V (another alternator of similar capacity for AC buses)

9.4 Electrical wiring & controls- type As specified separately under ITS specifications

10 Speed limiting device (optional): Electronic type duly approved /certified as per AIS – 018/2001 or latest,

tamper proof and be adjusted to applicable speed limit

11 Tyres Steel radial tube-less. Size and performance as per CMVR

12 Fuel tank Capable to enable bus operation ≥ 300 km between consecutive fillings

Fuel tank location Optional

13 Bus characteristics

13.1 Bus dimensions (mm)

a Overall length (over body excluding bumper) 12000 (minus tolerance of 100)

b Overall width (sole bar/floor level- extreme points) 2600 (maximum)

c Overall height (unladen - at extreme point) 3800 (maximum)

d Wheel-base 6100 (tolerance -200 +400)






i Front overhang As per CMVR

ii Rear overhang As per CMVR

13.2 Maximum turning circle radius (mm) As per CMVR

13.3 Floor height above ground (mm)- maximum 400/650/900

13.4 Clearances (mm)

a Minimum axle clearance (mm) 190

b Wheel area clearance (mm) > 220 for parts fixed to bus body & > 170 for the parts moving vertically

with axle.

c Minimum ground clearance (un-kneeled) in mm at GVW Within the wheelbase not less than 240

13.5 Angles (degrees)

a Angle of approach (unladen) Not less than 8.5°

b Angle of departure (unladen) Not less than 9.0°

c Ramp over angle (half of break-over angle) Not less than 4.8°

14 Bus gates/Doors

14.1 Type of doors Preferably in-swing in front with option of jack knife and double jack

knife in rear door

a Operating mechanism Electro pneumatically controlled

b Opening/Closing time in seconds per operation (maximum) 4

c Positions of door controls On dashboard and also inside & outside of doors

d Passenger safety system - allowing bus motion on doors

closing and doors opening only when the bus is stopped Mandatory

14.2 Front service doors - (near side/non-driver side) √

a Minimum door aperture (without flaps) in mm 800

b Minimum clear door width (fully opened) in m 650 ± 50






c Minimum door height in mm 1900

d Positioning front service gate Ahead of front axle

e Number of gates 1

14.3 Rear service doors (near side/non-driver side) :

14.3.1 Rear service doors (near side): √


b Minimum clear door width (fully opened) in mm 1000 ± 50

c Door height in mm 1900 (minimum)

d Positioning rear door Purchaser to select any of the two options

i Ahead of centre line of rear axle Preferably rear edge of gate 1500 mm ahead of centre line of rear axle

ii Behind the centre line of rear axle Preferably front edge of gate 1500 mm behind centre line of rear axle

e Number of gates 1

14.3.2 Applicable for BRTS

14.4 Applicable for BRTS





14.6 Maximum first step height (mm) from ground - unladen &

un-kneeled position in buses with:

a Stepped type entry (maximum) 400

b Level entry (at station platform height) Applicable for BRTS

14.7 Maximum height (mm) of other steps






a if door ahead of rear axle 250 (applicable only for 900/650 mm floor ht. buses)

b if door behind rear axle 300 (applicable only for 900/650 mm floor ht. buses)

14.8 Ramp for wheel chair at the gates wherever required

Sunken type wrap over (manually operated) ramp, for wheel chair of

PwDs, fitted on floor at gate in front of PwD seat anchorage. Suitable

design mechanism for 650/900mm floor height considering that floor

level of bus stops are at 400mm

a Dimensions Minimum width 900 mm

b Material Aluminium alloy with anti-slip coating

c Load carrying capacity (in kilograms) > 300

d Device to prevent the wheel chair roll off the sides when the

length exceeds 1200 mm √

e Device to lock wrapped up ramp √

f Kneel ramp control: (applicable in reference of clause 7.3) Kneeling arrangement for kneeling on left side severally and combined.

Kneeling up to 60mm

g Requirement for passengers with limited mobility √

i Wheel chair anchoring - minimum for one wheel chair √

ii Priority seats - minimum 2 seats √

iii Stop request √

h Emergency doors/exits or apertures (Numbers) As per AIS 052

Dimensions in mm As per AIS 052

i Door closing requirements for bus movement - Bus could move only after door closing completed

i

Power operated service door - construction & control system

of a power operated service door to be such that a Passenger

is unlikely to be injured/trapped between the doors while

As per AIS 052






closing.

ii Door components As per AIS 052

iii Door locks/locking systems/door retention items As per AIS 052

iv Door hinges As per AIS 052

15 Bus body

15.1 Design type approval As per Annexure-3

15.2 Bus structure - materials specs etc

Material to be decided by the manufacturer OR as per the tender

specifications issues by purchaser. Other requirements as per bus body

code. Material should fulfil strength etc. requirements indicated under

Annexure-3

15.3 Insulation

a Roof structure Material to be decided by the manufacturer OR as per the tender



Annexure-3 b Engine compartment

15.4 Aluminium extruded sections for:

a Rub rail

Aluminium extrusion IS 733/1983 or better

b Decorative moulding

c Wire cover

d Wearing strip

e Foot step edging

f Panel beading






g Window frame

h Roof grab rail brackets

15.5 Floor type/Materials etc

a Type of floor Flat except at wheel arches in the low floor area of bus- seats may be

located over the wheel arches

b Applicable for BRTS

c Steps on floor

No steps except those

necessary for the rear high

floor area

One step in the low floor area either at

gates or across the floor. Steps may be

provided as necessary on high floor in the

rear side

d Applicable for BRTS

e Maximum floor slope 6%

f Floor surface material

12 mm thickness phenolic resin bonded densified laminated compressed

wooden floor board (both side plain surface) having density of 1.2

gms/cc conforming to IS 3513 (Part-3): type VI 1989 or latest. The

flooring should also be boiling water resistant as for marine board

BIS:710-1976/ latest and fire retardant as per BIS:5509-2000

(IS15061:2002)

g Anti – skid material 3 mm thick anti-skid type silicon grains ISO 877/76 for colour, IS5509

for fire retardancy

15.6 Safety glasses and fittings:

a

Front windscreen (laminated) glass:

Single piece laminated safety glass, plain, flat/curved with curved

corners with PVB film IS 2553 (Part-2)-1992/latest. Standard designs

for each variant of buses to be followed. (Refer Annexure 1)

Size: Standard designs for each variant of buses to be followed.

(Refer Annexure 1)

b Rear windscreen: (wherever provided) Single piece flat/curved toughened glass-plain/flat/curved at centre &






curved at corners IS:2553 (Part-2)–1992/latest


(Refer Annexure 1)

c Side windows: Flat, 2-piece design-top fixed/sliding & bottom sliding toughened glass

IS2553 (Part-2)-1992/latest

d Glass specifications Toughened glass IS2553(Part-2)-1992/latest

Glass thickness: 4.8-5.3mm

e Window & other glasses - material specs, thickness etc Toughened as per IS:2553 (Part-2)–1992/latest of 4.8-5.3 mm thickness

f Safety glass As per AIS 052/CMVR

g Rear view mirrors As per AIS 052

15.7 Seating and gangway etc

15.7.1 Passenger seating’s for ordinary type-1 buses As per AIS 052

a Seat layout in the low floor area 2x2

b Seat layout in the higher floor area 2x2

c Seat area/seat space per passenger (width*depth) mm 400*350

d Seat pitch - minimum (mm) As per AIS 052

e

Minimum backrest height-from floor to top of seat/ headrest As per AIS 052

Seat base height-distance from floor to horizontal front

upper surface of seat cushion mm. As per AIS 052

Seat back rest height (mm) 375

f Torso angle (degrees) Minimum 12⁰

g Seat materials ‘PPLD/LDPE’moulded AIS 023 & AIS 052 for performance

h Seat frame structure material where required: Frame structure of ERW steel tube

i Free height over seating position (mm) More than 900






Seat base height As per AIS 052

j Clearance space for seated Passenger facing partition (mm) Minimum 350

k

Seat back/Pad material/Thickness: Polyurethane foam IS15061:2002 (padding is optional)

Type: MDI moulded IS 5509

Upholstery: Pile fabric/jekard 0.7-1mm thickness

l Area for seated passengers (sq. mm.) type 1 NDX/SDX: 400*350

m Area for standee passengers (sq. mm.) As per AIS 052

n Number of seats including one for wheel chair 32 - 34

o Number of standees Calculation as per AIS 052

p Sitting/Standing ratio Not required

q Head rest Not required

r Seats side facing location Not suggested except on wheel arches

s Seat arm Not required

t Magazine pouch Not required

u Individual seat row fans Not required

v Reading lights Not required

w Seat back rest Fixed

x Seat belts & their anchorage Not necessary except diver seat & wheel chair (performance etc. as per

AIS 052)

y Performance & strength requirements of: √

i Driver seat As per AIS 023

ii Passenger seats As per AIS 023

15.7.2 Gangway:

a Minimum interior head room (centre line of gangway) mm 1900 including that in the rear overhang area.






i At front axle: As per AIS 052

ii At rear axle: As per AIS 052

ii Other areas As per AIS 052

b Gangway width (mm) from gates to longitudinal space

between seats (access to service doors)

(Ref figure-1) minimum 700 mm excluding armrests (armrests are not

required) and including stanchions- will be measured from seat edge to

seat edge. In case of front engine buses, clear passage available between

front seat row and engine should not be less than 400 mm.

c Gangway width (mm) in longitudinal space between seats As above

d Gangway width (mm) in longitudinal space between seats

(rear of rear edge of the rear door in rear engine bus) As above

e Driver’s working space As per AIS 052

Driver’s seat As per AIS 052

15.8 Corrosion prevention & painting

As per clause 3.17 of AIS 052 a

Corrosion prevention treatment

Internal surfaces of structural members

External surfaces of structural members

After drilling holes/welding

Intermetallic galvanic corrosion prevention

b Primer coating

c Painting:

16 Electrical system BIS marked, copper conductors with fire retardant as per

IS/ISO:6722:2006 as per appropriate class. conductor x-sec varying as

per circuit requirements, minimum cross-section 0.5 sq mm. quality

marking may also be as per equivalent or better European, Japanese, US

standards

16.1 Electrical cables:

16.2 Conductor cross section






16.3 Safety requirements of electrical

As per AIS 052

a Fuse

b Isolation switches for electrical circuits where RMS value of

voltage exceeds 100 volts

c Location of cables away from heat sources

d Type approval of circuit diagram as per Standards related to

electric equipments/wiring

e Battery cut - off switch (isolator switch):

16.4 Wind screen wiper:

Electrically operated with two wiper arms & blades, wiper motor heavy

duty steel body with minimum 2-speed operation wiping system as per

CMVR/BIS:7827 part-1, 2, 3 (Sec.1 & 2)/latest. As per AIS 011

a Wiper motor: Variable speed with time delay relay as per AIS 011

b Wiper arm/Blade: As per AIS 019/AIS 011

16.5 Driver cabin fan 1 number, 200 mm fan as per provision of CMVR, matching interiors

16.6 Lighting - internal & external and illumination As per AIS 052

16.7 Illumination requirements/performance of:

a Dash board tell tale lighting/control lighting As per AIS 052

b Cabin lighting - luminous flux of all lamps for cabin lighting As per AIS 052 with illumination level of ≥ 100 lux & ≤ 200 lux

c Passenger area lighting -luminous flux of all lamps for

Passenger area lighting As per AIS 052 with illumination level of ≥ 100 lux and ≤ 150 lux

17 ITS enabled bus As specified separately under ITS specifications

18 Safety related items:

18.1 Driver seat belt & anchorage duly type approved. ELR recoil type, 3 point mounting as per CMVR & AIS 052 conforming

to AIS 005 & 015

18.2 Passengers seat belt: Not necessary except diver seat & wheel chair (performance etc. as per






Number: AIS 052)

18.3 Driver/Passenger/Wheel chair seat belt anchorage

18.4 Fire extinguisher: As per AIS 052

18.5 First aid box: 1 number, as per provision of CMVR

18.6 Handrails minimum length*diameter*height above floor in

mm

Colour contrasting and slip resistant of aluminium tubing 32 mm dia, 3

mm thick. rest as per AIS 052

18.7 Handholds: Colour contrasting and slip resistant. 2 to 4 numbers. Handholds per bay.

rest as per AIS 052

18.8 Stanchions:

Vertically fitted, aluminium tubing with colour contrasting and slip

resistant. 40 mm diameter & 3.15 mm thick. Rest as per AIS 052. As an

alternative to stanchions mounted on bus floor, stanchions mounted on

top of seat frames (new version seats) be explored (refer figure-2).

18.9 Bells for Passenger convenience High visibility bell pushes shall be fitted at a height of 1.2 meter on all

alternate stanchions. These would assist PwDs


18.11 Window guardrails:

As per AIS 052. An additional guard rail in the rear part of bus in view

of raised seating.

a In all school buses - minimum numbers.

b In all other buses- minimum numbers.

c In AC super deluxe buses

d Other details:

i First guard rail at a height from window sill in mm

ii The distance between two guard rails in mm

18.12 Entrance/Exit guard/Step well guard: 800 mm minimum height extending ≥ 100mm more than centre line of

sitting position of the Passenger.

18.13 Emergency exit doors, warning devices etc: As per AIS 052/CMVR

18.14 Front/Rear door, stepwell lights, door open sign Incandescent bulb/LED as per AIS 008






18.15 Mirrors right/left side exterior/interior: Convex as per AIS 001 & 002.Interior with double curvature

18.16 Towing device front/rear Heavy duty 1.2 times (minimum) the kerb weight of the bus with 30

o of

the longitudinal axis of the bus. As per CMVR & IS 9760 - ring type

18.17 Warning triangle As per AIS 052/CMVR

18.18 Fog lighting As per AIS 052/CMVR

18.19 Bumpers - front and rear

Both made of steel or impact resistant polymer or combination of both

meeting requirement of an energy absorbing system

Impact strength for bumpers Meet requirements of paragraph 6.3.1 of AIS 052

19 Miscellaneous items/requirements

19.1 Windows

a Type of window Sliding type window panes except AC bus

b Minimum height of window aperture (clear vision)4 in mm ≥ 950

c Minimum height of upper edge of window aperture from bus

floor As per AIS 052

d Minimum width of windows (clear vision zone) As per AIS 052

19.2 Cabin luggage carrier As per AIS 052

19.3 Life cycle requirements of bus (whichever is earlier) 12 years or 10,00,000 km

20 Air conditioning system - test procedure for type approval

20.1 Specifications a) For up to 42°C of saloon temperature and b) For > 42°C of saloon

temperature

20.2 Target results

a) 24± 4°C (up to 42°C)

b) Temperature gradient of 15° (> 42°C of saloon temperature) e.g. If

the saloon temperature is 45˚, then the target temperature inside the bus

is 45˚-15˚= 30˚

4 Clear vision includes partition between fixed and sliding glass subject to a maximum width of 100 mm






c) Minimum average air velocity at air vent is 4.5 m/s

20.3 Apparatus Lab condition and heating chamber

20.4 Procedure

1. Soak for 1 hour

2. At 2000 rpm

3.Upto 42°C: pull down time 30 minutes (maximum) (for more than

42°C of saloon temperature, pull down time within 40 minutes

(maximum))

4. Thermocouple to be placed over place minimum 20 numbers. at nose

level

20.5

Air Curtains on entry/exit gates to avoid loss/gain of heat and

or cool air when doors are frequently opened for

boarding/alighting of Passenger with min air flow of

1000±50 m³/hr at each gate. Type of air curtains at entry exit

gates their power consumption etc be accounted for while

deciding engine power, etc

Required

21 Additional requirements

21.1 Air circulations and ventilation in driver's area

An air passage/duct/roof hatch to be provided in driver area at a suitable

location for proper inflow of air inside the driver cab

Drivers work area to be provided with blower or suitable device (200

mm diameter fan) to ensure proper ventilation. These devices may be

capable of 3 – speed adjustment

21.2

Maximum noise levels inside the saloon (irrespective of AC,

non-AC/fuel type/engine location)-test procedure as per AIS

020

84 dba (to be achieved a maximum noise level of 81 dba from 1st April

2015 onwards)

22 Fuel efficiency requirement While tendering purchaser may take into account the higher weightage

for more fuel efficient vehicle under standard test conditions

Chapter - 03

Specifications for Mini and Midi bus

Specifications for Mini and Midi Bus


Bus specifications for Mini and Midi urban buses (AC/Non-AC)


Bus characteristics Mini Buses Midi buses

Bus Floor heights in mm Maximum floor height 900 mm with inclusion of variants of having

floor height of 400 mm& 650mm

Definition of low floor area

“Low floor area shall not be less than 50% of the total saloon area

(excluding front wheel boxes and driver’s cab) and shall not be ramped

in the longitudinal plane”

1 Propulsion system ICE. electrical, hybrid, fuel cell


norms

3 Engine Fuel compatible engine

3.1 Engine HP sufficient to provide :

a Rated performance at GVW in a stop/start urban

operations Geared maximum speed without speed limiter to be minimum 75 kmph

b An acceleration (meter/sec²) ≥ 0.8


d Maximum speed Geared maximum speed without speed limiter to be minimum 75 kmph


f Rated HP / torque preferably at lower rpm/rpm range Maximum engine torque required at lower range of RPM and spread

over a wider range of RPM






g Power requirements for Air conditioning system, ITS etc. Required

3.2 Emission norms BS III/BS IV/latest as applicable

3.3 Engine management

Engine oil pressure, engine coolant temperature, engine speed in RPM,

vehicle speed, engine % load (torque), diagnostic message ( engine

specific)



approximately 0o to 50

oC, humidity level from 5% to 100%, and altitude

levels of up to 2000 meters, generally operating in the semi arid

zone/hilly region prevailing in the area.


3.6 Transmission

a Automatic with torque convertor. Neutral during stops Purchaser to select any one transmission system. However, rear engine

buses to have either automatic or automated manual transmission system

only. (any bus delivered after 1st April, 2015 will mandatorily have

either automatic or automated manual transmission system)

b Automated manual


constant mesh on reverse gear

d Mounting Column or floor Optional



possible to engage reverse gear only when vehicle is stationary








5.1 Rear axle Single reduction, hypoid gears, full floating axle shafts with optimal

gear ratios suitable for urban operations


6 Steering system Hydraulic power steering

7 Suspension system Optional (air suspension/independent/parabolic/weveller)- irrespective

of the type of suspension, floor level of bus should not go beyond

maximum floor height (any bus delivered after 1st April, 2015 will

mandatorily have air suspension or superior)

7.1 Front

7.2 Rear

7.3 Kneeling (mm) applicable in case of air suspension

(required only for 400 mm floor height buses) 60 mm entry/exit side severally & collectively

7.4 Anti roll bars /stabilizers1 Both front and rear



8 Braking system

Dual circuit full air brakes, with preferably disc type arrangement for

front and drum at rear brakes. Graduated hand controlled, spring

actuated parking brakes acting on rear wheels (any bus delivered after

1st April, 2015 will mandatorily have disk brake in front)


8.2 Electronic controls (optional) √

9 Electrical system 12/242 volt DC 24 volt DC

1 Optional in case of independent suspension

2 24 Volt mandatory after April 2015






9.1 Batteries:

Low maintenance type lead acid batteries for 12/24 V (as applicable)

system- performance as per BIS:14257-1995( latest). 2*12V of

commensurate capacity. Maintenance free batteries preferred.

9.2 Self Starter 12/24V2 24V

9.3 Alternator 12/24V2 24V

9.4 Electrical wiring & controls -type As specified separately under ITS specifications

10 Speed limiting device (optional): Electronic type duly approved /certified as per AIS – 018/2001 or latest,



12 Fuel tank

Capacity of diesel fuel tank/ CNG cylinders adequate to enable bus

operation of up to 250 km between consecutive fillings



13.1 Bus dimensions in mm

a Overall length (over body excluding bumper) ≤ 7000 ≤ 9400

b Overall width (sole bar/floor level- extreme points) ≤ 2200 ≤2500

c Overall height (unladen-at extreme point ) 3300 (maximum) 3800 (maximum)

d Wheel-base ≥3000 ≤ 5000








13.2 Turning circle radius (mm)-minimum As per CMVR

13.3 Floor height above ground (mm) - maximum 900/650/400 900/650/400


a Axle clearance (mm) Minimum 190 mm

b Wheel area clearance (mm) > 220 mm for parts fixed to bus body & > 170 mm for the parts moving

vertically with axle.

c Minimum ground clearance (un-kneeled) at GVW Within the wheelbase not less than 240 mm.




c Ramp over angle (half of break-over angle) Minimum 4.8°

14 Bus Gates/Doors

14.1 Entry exit gates with doors

a Operating mechanism

Electrically/Electro

pneumatically

controlled

Electro pneumatically controlled

b Maximum opening closing time in seconds per operation 4

c Positions of door controls As per AIS 052



14.2 Front service doors - near side: √ √






a Door aperture (without flaps) in mm As per AIS 052

b Clear door width (fully opened) in mm As per AIS 052

c Door height in mm As per AIS 052

d Positioning front service gate As per AIS 052

e Number of gates minimum. 1

14.3 Rear service doors (near side): where provided Optional and at the discretion of purchaser


b Clear door width (fully opened ) in mm As per AIS 052


d Positioning rear door with respect to centre line of rear

axle. As per AIS 052

Preferably rear edge of gate 1500 mm ahead

of centre line of rear axle or front edge of gate

1500 mm behind centre line of rear axle

e Number of gates 1



14.6 Maximum first step height (mm) from ground - unladen

& un-kneeled position in buses with:

a Stepped type entry 400 400

b No step entry/level entry (maximum) 900/650/400 900/650/400


a if door ahead of rear axle 250 250






b if door behind rear axle 300 300

14.8 Ramp for wheel chair at the gates



design mechanism for 650/900mm floor ht considering that floor level

of bus stops are at 400mm

a Dimensions

As applicable for 14.8

b Material

c Load carrying capacity

d Device to prevent the wheel chair roll off the sides when

the length exceeds 1200 mm

e Device to lock wrapped up ramp

f Kneel ramp control: (applicable in reference of clause

7.3)

Kneeling arrangement for kneeling on left side severally and combined.

Kneeling up to 60mm

g Requirement for passenger with limited mobility √



iii Stop request- on every pillar √

h Emergency doors / exits or apertures (numbers) As per AIS 052


i Door closing requirements for bus movement Bus could move only after door closing completed






i

Power operated service door - construction & control

system of a power operated service door be such that a

Passenger is unlikely to be injured/trapped between the

doors while closing.

As per AIS 052


iii Door locks/locking systems/door retention As per AIS 052


15 Bus body


15.2 Bus structure - materials specifications etc




Annexure-3

15.3 Insulation

a Roof structure/body Material to be decided by the manufacturer OR as per the tender










a Rub rail



c Wire cover

d Wearing strip

e Foot step edging

f Panel beading

g Window frame


15.5 Floor type / materials etc

a Type of floor As per AIS 052

Flat except at wheel arches in the low floor

area of bus- seats may be located over the

wheel arches

b Type of floor Applicable only for BRTS

c Steps on floor

No steps except those

necessary on near side

gates or in rear side for

rear engine buses

No steps except those necessary on near side

gates or in rear side for rear engine buses

d Steps on floor N/A

e Maximum floor slope As per AIS 052

f Floor surface material 12 mm thickness phenolic resin bonded densified laminated compressed

wooden floor board (both side plain surface) having density of 1.2






gms/cc conforming to IS 3513(Part-3): type VI 1989 or latest. The

flooring should also be boiling water resistant as for marine board

BIS:710-1976/ latest and fire retardant as per BIS:5509-

2000(IS15061:2002),


for fire retardancy


a


Single piece laminated safety glass, plain, flat/curved with curved

corners with PVB film IS 2553 (Part-2)-1992/latest. Standard designs

for each variant of buses to be followed. (Refer Annexure 1)

Size: Standard designs for each variant of buses to be followed. (Refer

Annexure 1)

b

Rear windscreen: (wherever provided) Single piece flat/curved toughened glass-plain/flat/curved at centre &

curved at corners IS 2553 (Part-2)–1992/latest.


Annexure 1)

c Side windows:

Flat, 2-piece design-top fixed/sliding & bottom sliding toughened glass

IS 2553 (Part-2)-1992/latest.

d Glass specifications Toughened glass IS 2553 (Part-2)-1992/latest

Glass thickness: Minimum 4.0 mm 4.8-5.3 mm

e Window & other glasses - material specifications,

thickness etc Toughened as per IS 2553 (Part-2)–1992/latest of 4.8-5.3 mm thickness

f Safety glass As per AIS 052/ CMVR









a Seat layout in the low floor area As per AIS 052

b Seat layout in the higher floor area

c Seat area/seat space per passenger (width*depth) mm 400*350

d Seat pitch - minimum in mm As per AIS 052

e

Minimum backrest height-from floor to top of

seat/headrest As per AIS 052



Seat back rest height in mm 350 375


g Seat materials ‘PPLD/LDPE’ moulded AIS 023 & bus code for performance


i Free height over seating position in mm More than 800

Seat base height: As per AIS 052

j Clearance space for seated Passenger facing partition mm As per AIS 052

k Seat back / Pad material / Thickness: (optional) Polyurethane foam IS15061:2002, 30± 5 mm (padding is optional)







Upholstery: Pile Fabric/Jekard 0.7-1mm thickness

l Area for seated passengers (sq. mm.): 400*350

m Area for standee passengers (sq. mm.): As per AIS 052

n Number of seats including one for wheel chair 13-22 23 - 34

o Number of standees (calculation As per AIS 052) As per AIS 052

p Seats side facing location Not suggested except on wheel arches

q Seat back rest Fixed

r Seat belts & their anchorage Not necessary except diver seat & wheel chair (performance etc. as per

AIS 052)

s Performance & strength requirements of: √



15.7.2 Gangway:

a Minimum interior head room (centre line of gangway) in

mm

1750 mm for standee

type &1500 mm for

non standee type

1900 mm including that in the rear overhang

area.

i At front axle:

As per AIS 052 ii At rear axle:

iii Other areas







between rows of seats (access to service doors)

(Refer figure-1) minimum 600 mm excluding armrests (armrests are not


seat edge. In case of front engine buses, clear passage available between

front seat row and engine should not be less than 400 mm.

c Gangway width (mm) in longitudinal space between rows

of seats As above

d Gangway width (mm) in longitudinal space between rows

of seats (rear of rear edge of the rear door in RE bus) As above


Driver’s seat As per AIS 023 & AIS 052

15.8 Corrosion prevention & painting As per clause 3.17 of AIS 052

a


As per clause 3.17 of AIS 052



After drilling holes / welding

Inter metallic galvanic corrosion prevention

b Primer coating

c Painting:

16 Electricals







BIS marked, copper conductors with fire retardant as per IS/ISO:

6722:2006 as per appropriate class. Conductor cross-section varying as

per circuit requirements, min cross-section 0.5 sq mm. Quality marking

may also be as per equivalent or better European, Japanese, US

standards

16.2 Conductor cross section As above and suitable to carry rated current (Japanese auto standard

JASO D0609-75 AV)

16.3 Safety requirements of electrical As per AIS 052

a Fuse As per AIS 052 - fuse of rated current 1.5 times the load current of

electrical equipment. Necessary in every electrical circuit

b Isolation switches for electrical circuits where RMS value

of voltage exceeds 100 volts As per AIS 052 - Isolation switch required for each such circuit

c Location of cables away from heat sources As per AIS 052 - Required for each such circuit

d Type approval of circuit diagram as per standards related

to electric equipments/wiring As per AIS 052 - Required for all items

e Cable insulation with respect to heat As per AIS 052

f Battery cut - off switch (isolator switch): Heavy-duty type capable of carrying & interrupting total circuit load. 1

each near battery/driver



duty steel body with minimum 2-Speed operation wiping system as per

CMVR/ BIS 7827 part-1, 2, 3 (Sec.1 & 2)/latest. As per AIS 011

a Wiper motor: Variable speed with time delay relay as per AIS 011

b Wiper arm/blade: As per AIS 019/AIS 011






16.5 Driver cabin fan 1 number, 200mm fan as per provision of CMVR, matching interiors



a Dash board tell tale lighting/control lighting As per AIS 052 & bulbs tested for photometry as per IS 1606:1996

b Cabin lighting - luminous flux of all lamps for cabin

lighting As per AIS 052 with illumination level of ≥ 100 lux & ≤ 200 lux

c Passenger area lighting - luminous flux of all lamps for




18.1 Driver seat belt & anchorage duly type approved. ELR recoil type 3 point mounting as per CMVR & AIS 052.conforming

to AIS 005&015.

18.2 Passengers seat belt:

Not necessary except diver seat & wheel chair (performance etc. as per

AIS 052) Number:

18.3 Driver/Passenger/Wheelchair seat belt anchorage



18.6 Handrails minimum length*diameter*height above floor

in mm

Colour contrasting and slip resistant of aluminium tubing. 32 mm dia, 3

mm thick.

18.7 Handholds: Colour contrasting and slip resistant. 2 to 4 numbers. Handholds per bay






18.8 Stanchions:

Vertically fitted, aluminium tubing with colour contrasting and slip

resistant. 40 mm dia & 3.15 mm thick. Rest As per AIS 052. As an

alternative to stanchions mounted on bus floor, stanchions mounted on

top of seat frames (new version seats) be explored (refer figure-2).

18.9 Bells for Passenger convenience High visibility bell pushes shall be fitted at a height of 1.2 meter on all

alternate stanchions. These would assist PwDs

18.10 Left Blank


As per AIS 052. An additional guard rail in the rear part of bus in view

of raised seating.


b In all other buses - minimum numbers.


d Other details:



18.12 Entrance/Exit Guard/Step well guard: 800 mm minimum height extending ≥ 100mm more than centre line of



18.14 Front/rear door, step well lights, door open sign Incandescent bulb/LED as per AIS 008

18.15 Mirrors right/left side exterior/interior: Convex as per AIS 001 & 002. Interior with double curvature






18.16 Towing device front /rear Heavy duty 1.2 times (minimum) the kerb weight of the bus with 30

o of







Impact strength for bumpers Meet requirements of Para 6.3.1 of AIS 052


19.1 Windows


b Minimum height of window aperture (clear vision)3 ≥ 500 mm ≥ 950 mm

c Minimum height of upper edge of window aperture from

bus floor As per AIS 052





20.1 Specifications a) For up to 42°C of saloon temperature and b) > 42°C of saloon

temperature







20.2 Target results

a) 24+/- 4°C (Up to 42°C )

b) Temperature gradient of 15⁰ ( > 42°C of saloon temperature) eg. If

the saloon temperature is 45˚, then the target temperature inside the bus

is 45˚-15˚= 30˚



20.4 Procedure

1. Soak for 1 hour

2. At 2000 rpm

3.Upto 42°C: pull down time 30 minutes (maximum)( for more than

42°C of saloon temperature, pull down time within 40 minutes

(maximum))

4. Thermocouple to be placed over place minimum 20 numbers. at nose

level

20.5

Air curtains on entry /exit gates to avoid loss/gain of heat

and or cool air when doors are frequently opened for

boarding / alighting of Passenger with min air flow of

1000±50 m³/hr at each gate. Type of air curtains at entry

exit gates their power consumption etc be accounted for

while deciding engine power, etc

Required


21.1 Air circulations and ventilation in driver's area An air passage/duct/roof hatch to be provided in driver area at a suitable







Drivers work area to be provided with blower or

suitable device (200 mm diameter fan) to ensure

proper ventilation. These devices may be capable of 3

– speed adjustment;

21.2

Maximum noise levels inside the saloon (irrespective of

AC, Non-AC/fuel type/engine location)-test procedure as

per AIS020

84 dba ( to be achieved a maximum noise level of 81 dba from 1st April

2015 onwards)

22 Fuel efficiency requirement While tendering purchaser may take into account the higher weightage

for more fuel efficient vehicle under standard test conditions

Chapter - 04

Specifications for Standard size

BRT bus

Specifications for Standard Size BRT Bus


Bus specifications of standard BRTS bus (AC/Non-AC)


Bus characteristics Maximum floor height:400/650/900 mm

Definition of Floor area Floor height of 400, 650 or 900 mm shall be uniform inside the vehicle

1 Propulsion system ICE, electrical, hybrid, fuel cell


norms

3 Engine



b Acceleration (meter/sec²) ≥ 0.8

c Attain bus speed of 0-30 kmph in Seconds ≤ 10.5



f Rated HP/torque preferably at lower rpm range Maximum engine torque required at lower range of RPM and spread over

a wider range of RPM

g Power requirements for Air conditioning system, ITS, etc Required






approximately 0° to 50° C, humidity level from 5% to 100%, and altitude

levels of up to 2000 meters, generally operating in the semi arid zone/hilly

region prevailing in the area.


3.6 Transmission

a Automatic with torque convertor. Neutral during stops Purchaser to select any one transmission system.

b Automated manual







constant mesh on reverse gear Not applicable for BRTS



possible to engage reverse gear only when vehicle is stationary (applicable

for automatic & automatic manual transmission)

5 Clutch (where applicable) Dry, Single plate, power assisted operation

5.1 Rear axle Single reduction, hypoid gears, full floating axle shafts with optimal gear

ratios suitable for urban operations



7 Suspension system1 Pneumatic



7.3 Kneeling Not Required




8 Braking system

Dual circuit full air brakes, with preferably disc type arrangement for front

and drum at rear brakes. Graduated hand controlled, spring actuated

parking brakes acting on rear wheels (Any bus delivered after 1st April,

2015 will mandatorily have disc brake in front)

1 Only in case of 900 mm floor height buses, front suspension can have option of air suspension/independent/parabolic/weveller type. Irrespective of the type of

suspension, floor level of bus should not go beyond maximum floor height. Any bus delivered after 1st April, 2015 will mandatorily have air suspension or superior in both front & rear. 2 Optional in case of independent suspension







8.2 Electronic controls Optional


9.1 Batteries:

Low maintenance type lead acid batteries for 24 V system- performances

as per BIS: 14257-1995 (latest). 2*12V of commensurate capacity.

Maintenance free batteries preferred.

9.2 Self Starter 24V



10 Speed limiting device (optional) Electronic type duly approved/certified as per AIS – 018/2001 or latest,



12 Fuel Tank Capable to enable bus operation ≥ 300 km between consecutive fillings

Fuel Tank location Optional


13.1 Bus dimensions mm



c Overall height (unladen - at extreme point) 3800 (maximum)

d Wheel-base 6100 (tolerance of -200 + 400)

i Front Overhang As per CMVR

ii Rear Overhang As per CMVR


13.3 Floor height above ground (mm) ≤ 400/650/900 (tolerance -20)







a Minimum Axle clearance (mm) 190 mm



c Minimum ground clearance (un-kneeled) at GVW Within the wheelbase not less than 240mm.





14 Bus Gates/Doors

14.1 Type of doors Preferably in-swing in front with option of jack knife and double jack

knife in rear door


b Opening/Closing time in seconds per operation (maximum) 4

c Positions of door controls On dashboard and also inside & outside of doors



14.2 Front service doors (refer "A" in fig -1) - (near side/non-

driver side) √ √


b Minimum clear door width (fully opened) in mm 650 ± 50

c Minimum door height in mm 1900


e Number of gates 1

14.3 Rear service doors (Near side/non-driver side)






14.3.1 Not Applicable for BRTS

14.3.2

Rear service doors -refer "C" in figure 1 (near side/non-

driver side); steps required for non BRTS operations, steps

not required for level boarding

Optional for Purchaser

a Minimum door aperture (without flaps) in mm 1200 (minimum)

b Minimum clear door width (fully opened ) in mm 1000 ± 50

c Minimum Door height in mm 1850

d Positioning rear door Purchaser to select any one of the two options.

i Ahead of centre line of rear axle Preferably rear edge of gate 1500 mm ahead of centre line of rear axle

ii Behind the centre line of rear axle Preferably front edge of gate 1500 mm behind centre line of rear axle

e Number of gates 1

14.4 Entry/Exit door between wheels (near side/non driver)

14.4.1

Entry/Exit door; refer "B" in figure 3– between wheels

(near side/non driver side) ; steps required for non BRTS

operations; steps not required for level boarding

Option one door & steps optional - purchaser to decide option one or two

or three

a Door aperture (without flaps) in mm 1200

b Clear door width (fully opened) in mm 1000 ± 50


d Fixed Partition between gates - full height Optional (Purchaser to decide)

e Width of partition in mm 400 (maximum)

f Location of partition

Vertical centre line of partition maximum 5800 mm and minimum 4300

mm from the front edge of bus; (Purchaser to specify preferred distance as

per their BRT facility)

g Positioning doors with respect to partition. One on each side of the partition






h Number of gates 2

14.4.2

Entry/Exit door; refer "B" in figure 3 – between wheels

(near side / non driver side) ; steps required for non BRTS


Option Two door width & steps optional - Purchaser to decide option one

or two or three


b Clear door width (fully opened) in mm 1000 ± 50 (minimum)


d Location of partition N/A

e Positioning doors with respect to partition. N/A

f Number of gates 1

g Positioning gates

Vertical centre line of aperture maximum 5800 mm and minimum 4300

mm from the front edge of bus; (Purchaser to specify preferred distance

as per their BRT facility)

14.4.3

Entry/Exit door; refer "B" in figure 3 – between wheels

(near side/non driver side); steps required for non BRTS


Option Three door width & steps optional - Purchaser to decide option one

or two or three

a Door aperture in mm 1500 mm

b Clear door width (fully opened) in mm 1300 ± 50 (maximum)

c Door height in mm 1900 mm (minimum)



f Number of gates 1

g Positioning doors

Vertical centre line of aperture maximum 5800 mm and minimum 4300

mm from the front edge of bus;(Purchaser to specify preferred distance as

per their BRT facility)






14.5 Entry/Exit doors, refer "D" in figure 3 - for off side/driver

side location - steps not required for level boarding Required

a Door aperture in mm 1200



d Fixed partition between gates - full height Optional (Purchaser to decide)



Vertical centre line of partition maximum 5800 mm and minimum 4300

mm from the front edge of bus; (Purchaser to specify preferred distance

as per their BRT facility)


h Number of gates 2

14.6 Maximum first step height (mm) from ground - unladen &

un-kneeled position in buses with:


b Level entry (at station platform height) No steps required

14.7 Maximum height (mm) of other steps (where required)

a if door ahead of rear axle 250

b if door behind rear axle 250

14.8 Ramp for wheel chair at the gates wherever required



design mechanism for 650/900mm floor height considering that floor level


a Dimensions Minimum width 900 mm







c Load carrying capacity (in kilograms) > 300

d Device to prevent the wheel chair roll off the sides when

the length exceeds 1200mm √


f Kneel ramp control: (applicable in reference of clause 7.3) Kneeling arrangement for kneeling on left side severally and combined.

Kneeling upto 60mm

g Requirement for passengers with limited mobility √






i Door closing requirements for bus movement - Bus could move only after door closing completed

i


system of a power operated service door to be such that a

Passenger is unlikely to be injured/trapped between the

doors while closing.

As per AIS 052




15 Bus body


15.2 Bus structure - materials specifications etc Material to be decided by the manufacturer OR as per the tender








Annexure-3

15.3 Insulation






a Rub rail



c Wire cover

d Wearing strip

e Foot step edging

f Panel beading

g Window frame



a Not applicable for BRTS

b Type of Floor Uniform flat floor

c Not applicable for BRTS

d Steps on floor No steps/hump inside bus except where required for entry/exit



12mm thickness phenolic resin bonded densified laminated compressed

wooden floor board (both side plain surface) having density of 1.2 gms/cc

conforming to IS 3513 (Part-3): type VI 1989 or latest. The flooring






should also be boiling water resistant as for marine board BIS:710-1976/

latest and fire retardant as per BIS:5509-2000 (IS15061:2002)


for fire retardancy


a


Single piece laminated safety glass, plain, flat/curved with curved corners

with PVB film IS 2553 (Part-2)-1992/latest. Standard designs for each

variant of buses to be followed (Refer Annexure 1)


Annexure 1)

b

Rear windscreen: (wherever provided) Single piece flat/curved toughened glass-plain/flat/curved at centre &

curved at corners IS:2553 (Part-2)–1992/latest


Annexure 1)

c Side windows: Flat, 2-piece design-top fixed/sliding & bottom sliding toughened glass IS

2553 (Part-2)-1992/latest.

d Glass specifications Toughened glass IS2553 (Part-2)-1992/latest


e Window & other glasses - material specs, thickness etc Toughened as per IS:2553 (Part-2)–1992/latest of 4.8-5.3 mm thickness







c Seat area/seat space per Passenger (width*depth) mm 400*350






d Seat pitch - minimum (mm) As per AIS 052

e

Minimum backrest height-from floor to top of seat/headrest As per AIS 052



Seat back rest height mm 375


g Seat materials ‘PPLD/LDPE’ moulded AIS:023 & AIS 052 for performance




j Clearance space for seated Passenger facing partition (mm) Minimum 350

k

Seat back/Pad material/Thickness: Polyurethane Foam IS15061:2002 (padding is optional)

Type: MDI Moulded IS 5509

Upholstery: Pile Fabric/Jekard 0.7-1.0 mm thickness

l Area for seated passengers (sq. mm.) type 1 NDX/SDX: 400*350

m Area for standee passengers (sq. mm.): As per AIS 052

n Number of seats including one for wheel chair 32 - 34

o Number of standees Calculation as per AIS 052

p Sitting/Standing Ratio Not required

q Headrest Not required

r Seats side facing location Not suggested except on wheel arches

s Seat arm Not required

t Magazine pouch Not required

u Individual seat row fans Not required






v Reading lights Not required

w Seat back rest Fixed

x Seat belts & their anchorage Not necessary except diver seat & wheel chair (performance etc. as per

AIS 052)

y Performance & strength requirements of: √



15.7.2 Gangway:

a Minimum interior head room (centre line of gangway)

(mm) 1900 including that in the rear overhang area.



iii Other areas As per AIS 052


between seats (access to service doors)

(Ref figure-1) minimum 700 mm excluding armrests (armrests are not


seat edge.


d Gangway width (mm) in longitudinal space between seats

(rear of rear edge of the rear door in rear engine bus) As above



15.8 Corrosion prevention & painting

As per clause 3.17 of AIS 052 a











b Primer coating

c Painting:

16 Electrical system BIS marked, Copper conductors with fire retardant as per IS/ISO:

6722:2006 as per appropriate class. Conductor cross-section varying as

per circuit requirements, minimum cross-section 0.5 sq mm. Quality

marking may also be as per equivalent or better European, Japanese, US

standards




As per AIS 052

a Fuse

b Isolation switches for electrical circuits where RMS value

of voltage exceeds 100 volts


d Type approval of circuit diagram as per standards related to

electric equipments/wiring




duty steel body with minimum 2-Speed operation wiping system as per

CMVR/BIS:7827 Part-1, 2, 3 (Sec.1 & 2)/latest. As per AIS 011

a Wiper motor: Variable speed with time delay relay as per AIS 011.

b Wiper arm/blade: As per AIS 019/AIS 011

16.5 Driver cabin fan 1 number, 200 mm fan As per provision of CMVR, matching interiors









b Cabin lighting - luminous flux of all lamps for cabin

lighting As per AIS 052 with illumination level of ≥100 lux & ≤ 200 lux

c Passenger area lighting - luminous flux of all lamps for

Passenger area lighting As per AIS 052 with illumination level of ≥100 lux and ≤ 150 lux



18.1 Driver seat belt & anchorage duly type approved. ELR recoil type, 3 point mounting as per CMVR & AIS 052 conforming

to AIS 005 & 015


Not necessary except diver seat & wheel chair (performance etc. as per

AIS 052) Number/location

18.3 Driver/Passenger/wheelchair seat belt anchorage



18.6 Handrails minimum length*diameter*height above floor in

mm

Colour contrasting and slip resistant of aluminium tubing 32 mm dia, 3

mm thick. Rest as per AIS 052

18.7 Handholds: Colour contrasting and slip resistant. 2 to 4 numbers. Handholds per bay.

Rest as per AIS 052

18.8 Stanchions:

Vertically fitted, aluminium tubing with Colour contrasting and slip

resistant. 40 mm dia & 3.15 mm thick. Rest as per AIS 052. As an

alternative to stanchions mounted on bus floor, stanchions mounted on top

of seat frames (new version seats) be explored (refer figure-2).

18.9 Not applicable for BRTS

18.10 Passenger stop request signal

High visibility bell pushes/pully chord/touch tape shall be fitted at a height

of 1.2 meter on all alternate stanchions mainly for persons with

disabilities. (optional)







a In all school buses - minimum numbers. Not Applicable

b In all other buses- minimum numbers. As per AIS 052


As per AIS 052 d Other details:



18.12 Entrance/Exit guard/Step well guard: 800 mm minimum height extending ≥ 100mm more than centre line of



18.14 Front/Rear door, step well lights, door open sign Incandescent bulb/LED as per AIS 008

18.15 Mirrors right/left side exterior/interior: Convex as per AIS: 001 & 002. Interior with double curvature

18.16 Towing device front/rear Heavy duty 1.2 times (minimum) the kerb weight of the bus with 30⁰ of









19.1 Windows


b Minimum height of window aperture (clear vision)3 in mm ≥ 950







c Minimum height of upper edge of window aperture from







temperature

20.2 Target results

a) 24± 4°C (up to 42°C )

b) Temperature gradient of 15° ( > 42°C of saloon temperature) eg. If the

saloon temperature is 45o, then the target temperature inside the bus is 45

o-

15o= 30

o



20.4 Procedure

1. Soak for 1 hour

2. At 2000 rpm

3.Upto 42°C: pull down time 30 minutes (maximum) (for more than 42°C

of saloon temperature, pull down time within 40 minutes (maximum))

4. Thermocouple to be placed over place minimum 20 numbers at nose

level

20.5

Air curtains on entry/exit gates to avoid loss/gain of heat

and or cool air when doors are frequently opened for

boarding/alighting of Passenger with min air flow of

1000±50 m³/hr at each gate. Type of air curtains at entry

exit gates their power consumption etc be accounted for

while deciding engine power, etc

Required










Drivers work area to be provided with blower or suitable device (200 mm

diameter fan) to ensure proper ventilation. These devices may be capable

of 3 – speed adjustment

21.2

Maximum noise levels inside the saloon (irrespective of

AC, non-AC/fuel type/engine location)-test procedure as

per AIS 020

84 dba (to be achieved a maximum noise level of 81 dba from 1st April

2015 onwards)

22 Fuel efficiency requirement While tendering purchaser may take into account the higher weight age for

more fuel efficient vehicle under standard test conditions

Chapter - 05

Specifications for Mini and Midi

BRT bus

Specifications for Mini and Midi BRT Bus


Bus specifications for Mini and Midi BRT buses (AC/Non-AC)


Mini Buses Midi buses

Maximum Bus Floor heights in mm

Floor height of 400,

650 or 900 mm shall

be uniform inside

the vehicle

Floor height of 400,

650 mm shall be

uniform inside the

vehicle

Floor height of

900 mm shall

be uniform

inside the

vehicle

Definition of Low Floor area

“Low floor area shall not be less than 50% of the total saloon

area (excluding front wheel boxes and driver’s cab) and shall

not be ramped in the longitudinal plane”

1 Propulsion System ICE, Electrical, Hybrid, Fuel Cell

2 Fuel-options Fuel to be compatible with propulsion system & prescribed

emission norms

3 Engine Fuel compatible engine




c Attain Bus speed of 0-30 kmph in seconds ≤ 10.5



f Rated HP/torque preferably at lower rpm range Maximum engine torque required at lower range of RPM and

spread over a wider range of RPM

g Power requirements for Air conditioning system, ITS, etc Required

3.2 Emission norms BS III/BS IV/latest as applicable






3.3 Engine management

Engine oil pressure, engine coolant temperature, engine speed

in RPM, vehicle speed, engine % load (torque), diagnostic

message (engine specific)


Engine should be able to operate efficiently at ambient

temperatures of approximately 0o to 50

oC, humidity level

from 5% to 100%, and altitude levels of upto 2000 meters,

generally operating in the semi arid zone/hilly region

prevailing in the area.


3.6 Transmission

a Automated Manual Transmission (AMT) Purchaser to select any one transmission system. However,

rear engine buses to have either automatic or automated

manual transmission system only. (any bus delivered after 1st

April, 2015 will mandatorily have either automatic or

automated manual transmission system)

b Manual synchromesh - forward speeds (minimum 5) & constant mesh

on reverse gear (MT)

c Automatic transmission with torque convertor. Neutral during stops

d Mounting Column or floor Optional


Transmission system to be fitted with a mechanism which

makes it possible to engage reverse gear only when vehicle is

stationary (applicable for automatic & automatic manual

transmission)


5.1 Rear axle Single reduction, hypoid gears, full floating axle shafts with

optimal gear ratios suitable for urban operations

5.2 Front axle Heavy duty reverse Elliot type axle suitable for various floor

heights

6 Steering system Hydraulic power steering






7 Suspension system Optional (air suspension/Independent/parabolic/weveller)-

irrespective of the type of suspension, floor level of bus

should not go beyond maximum floor height (any bus

delivered after 1st April, 2015 will mandatorily have air

suspension or superior)

7.1 Front

7.2 Rear

7.3 Kneeling (mm) applicable in case of air suspension Not Required




8 Braking system

Dual circuit full air brakes, with preferably disc type

arrangement for front and drum at rear brakes. Graduated

hand controlled, spring actuated parking brakes acting on rear

wheels (any bus delivered after 1st April, 2015 will

mandatorily have disc brake in front)


8.2 Electronic controls (optional) √

9 Electrical system 12/242 volt DC 24 volt DC

9.1 Batteries:

Low maintenance type lead acid batteries for 12/24 V (as

applicable) system- performances as per BIS: 14257-1995

(latest). 2*12V of commensurate capacity. Maintenance free

batteries preferred.

9.2 Self starter 12/24V2 24V


2 24 Volt mandatory after April 2015






9.3 Alternator 12/24V2 24V

9.4 Electrical wiring & controls –type As specified separately under ITS specifications

10 Speed limiting device (optional):

Electronic type duly approved/certified as per AIS –

018/2001 or latest, tamper proof and be adjusted to applicable

speed limit


12 Fuel tank

Capacity of diesel fuel tank/CNG cylinders adequate to

enable bus operation of up to 250 km between consecutive

fillings




a Overall length (over body excluding bumper) ≤ 7000 9000 (tolerance + 400 mm)

b Overall width (sole bar/floor level- extreme points) ≤ 2200 ≤ 2500 (≤ 2200 Preferred; Purchaser to

specify)

c Overall height (unladen-at extreme point) 3300 (maximum) 3800 (maximum)

d Wheel-base ≥ 3000 ≤ 5000



13.2 Turning circle radius (mm) - minimum As per CMVR

13.3 Floor height above ground (mm) 900/650/400 ± 20 650/400 ± 20 900 ± 20


a Axle clearance (mm) Minimum.190 mm

b Wheel area clearance (mm) > 220 mm for parts fixed to bus body & > 170 mm for the






parts moving vertically with axle.

c Minimum ground clearance (un-kneeled) at GVW Within the wheelbase not less than 240mm.




c Ramp over angle (half of break-over angle) Minimum 4.8°

14 Bus Gates/Doors

14.1 Entry exit gates with doors

a Operating mechanism

Electrical/Electro

pneumatically

controlled

Electro pneumatically controlled

b Maximum opening closing time in seconds per operation 4

c Positions of door controls As per AIS 052

d Passenger safety system - allowing bus motion on doors closing √

14.2 Front service doors - near side: √





e Number of gates minimum. 1

14.3 Rear service doors (near side): where provided Optional and at the discretion of purchaser


b Clear door width (fully opened) As per AIS 052






c Door height As per AIS 052

d Positioning rear door with respect to centre line of rear axle As per AIS 052

Preferably rear edge of gate 1500 mm

ahead of centre line of rear axle or

front edge of gate 1500mm behind

centre line of rear axle

e Number of gates 1

14.4 Entry/Exit door – between wheels (near side/non driver side); station

platform 400/650/900 mm level boarding Required

a Door aperture in mm 1200 mm or 1500 mm (Purchaser to specify)

b Clear door width (fully opened) 1000 ± 50 minimum for 1200 mm or 1300 ± 50 maximum

for 1500 mm

c Door height 1900 mm (minimum)

d

Fixed partition between gates - full height N/A

Width of partition in mm N/A

Location of partition N/A


f Number of gates 1

g Positioning doors Vertical centre line of the door aperture is centre line of

wheel base

14.5 Location of gates Location on off side/driver side (to match the height of

platform without steps)

a Door aperture (without flaps) in mm 1500 800

b Clear door width (fully opened) 1300 ± 50 650

c Door height 1900 mm (minimum)






d Number of gates minimum 1 2

d

Fixed partition between gates - full height N/A Optional (Purchaser to decide)

Width of partition in mm N/A 400 (maximum)

Location of partition N/A Vertical centre line of the partition is

centre line of wheel base

e Positioning doors with respect to partition. One on each side of partition

f Number of gates 1 2

14.5 Intentionally left blank

14.6 Maximum first step height (mm) from ground - unladen & un-kneeled

position in buses with:

a Stepped type entry 400

b No step entry/level entry (at station platform height.) 900/650/400 900/650/400

14.7 Maximum height (mm) of other steps In no case, bus floor height should go beyond the maximum

floor height.

a if door ahead of rear axle 250 250

b if door behind rear axle 250 250

14.8 Ramp for wheel chair at the gates, as applicable

Sunken type wrap over (manually operated) ramp, for wheel

chair of PwDs, fitted on floor at gate in front of PwD seat

anchorage. Suitable design mechanism for 650/900mm floor

height considering that floor level of bus stops are at 400mm

a Dimensions

As applicable for 14.8

b Material

c Load carrying capacity

d Device to prevent the wheel chair roll off the sides when the length

exceeds 1200mm






e Device to lock wrapped up ramp

f Kneel ramp control: (applicable in reference of clause 7.3) Kneeling arrangement for kneeling on left side severally and

combined. Kneeling up to 60mm




iii Stop request- on every pillar √

h Emergency doors/exits or apertures (numbers) As per AIS 052


i Passenger safety system - allowing bus motion on doors closing and

doors opening only when the bus is stopped Mandatory

i

Power operated service door - construction & control system of a

power operated service door be such that a Passenger is unlikely to be

injured/trapped between the doors while closing.

As per AIS 052




15 Bus body



Material to be decided by the manufacturer OR as per the

tender specifications issues by purchaser. Other requirements

as per bus body code. Material should fulfil strength etc.






requirements indicated under Annexure-3

15.3 Insulation

a Roof structure/body Material to be decided by the manufacturer OR as per the

tender specifications issues by purchaser. Other requirements

as per bus body code. Material should fulfil strength etc.

requirements indicated under Annexure-3 b Engine compartment


a Rub rail



c Wire cover

d Wearing strip

e Foot step edging

f Panel beading

g Window frame


15.5 Floor type/materials etc

a Type of floor N/A

b Type of floor Uniform floor inside bus without steps

c Steps on floor Not required

d Steps on floor N/A

e Maximum floor slope As per AIS 052


12mm thickness phenolic resin bonded densified laminated

compressed wooden floor board (both side plain surface)

having density of 1.2 gms/cc conforming to IS 3513(Part-3):

type VI 1989 or latest. The flooring should also be boiling






water resistant as for marine board BIS:710-1976/ latest and

fire retardant as per BIS:5509-2000(IS15061:2002)

g Anti – skid material 3 mm thick anti-skid type silicon grains ISO 877/76 for

colour, IS5509 for fire retardancy


a


Single piece laminated safety glass, plain, flat/curved with

curved corners with PVB film IS 2553 (Part-2)-1992/latest.

Standard designs for each variant of buses to be followed

(Refer Annexure 1)


(Refer Annexure 1)

b

Rear windscreen: (wherever provided) Single piece flat/curved toughened glass-plain/flat/curved at

centre & curved at corners IS 2553(Part-2)–1992/latest


(Refer Annexure 1)

c Side windows: Flat, 2-piece design-top fixed/sliding & bottom sliding

toughened glass IS 2553 (Part-2)-1992/latest.


Glass thickness: Minimum 4.0 mm 4.8-5.3mm

e Window & other glasses - material specifications, thickness etc Toughened as per IS 2553 (Part-2)–1992/latest of 4.8-5.3

mm thickness




15.7.1 Passenger seating for ordinary type-1 buses As per AIS 052

a Seat layout in the low floor area As per AIS 052






b Seat layout in the higher floor area

c Seat area/seat space per Passenger (width*depth) mm 400*350

d Seat pitch - minimum in mm As per AIS 052

e

Minimum backrest height-from floor to top of seat/headrest As per AIS 052

Seat base height-distance from floor to horizontal front upper surface

of seat cushion mm. As per AIS 052

Seat back rest height in mm 350 375


g Seat materials ‘PPLD/LDPE’ moulded AIS:023 & bus code for

performance

h Seat frame structure material where required: Frame Structure of ERW steel tube



j Clearance space for seated Passenger facing partition mm AIS 052

k

Seat back/Pad material/Thickness: (optional) Polyurethane foam IS15061:2002, 30±5 mm (padding is

optional)


Upholstery: Pile Fabric/Jekard 0.7-1mm thickness

l Area for seated passengers (sq.mm.): 400*350

m Area for standee passengers (sq.mm.): As per AIS 052

n Number of seats including one for wheel chair 13-22 23-34

o Number of standees (calculation as per AIS 052) As per AIS 052

p Seats side facing location Not suggested except on wheel arches

q Seat back rest Fixed






r Seat belts & their anchorage Not necessary except diver seat & wheel chair (performance

etc. as per AIS 052)

s Performance & strength requirements of: √



15.7.2 Gangway:

a Minimum interior head room (centre line of gangway) in mm

1750 mm for

standee type &1500

mm for non standee

type

1900 mm including that in the rear

overhang area.

i At front axle:

As per AIS 052 ii At rear axle:

iii Other areas

b Gangway Width (mm) from gates to longitudinal space between rows

of seats (Access to service doors)

(Refer figure-1) minimum 600 mm excluding armrests

(armrests are not required) and including stanchions- will be

measured from seat edge to seat edge.

c Gangway Width (mm) in longitudinal space between rows of seats As above

d Gangway Width (mm) in longitudinal space between rows of seats

(rear of rear edge of the rear door in RE bus) As above


Driver’s seat As per AIS 023 & AIS 052

15.8 Corrosion prevention & painting As per clause 3.17 of AIS 052

a Corrosion prevention treatment

As per clause 3.17 of AIS 052 Internal surfaces of structural members









b Primer coating

c Painting:

16 Electricals


BIS marked, copper conductors with fire retardant as per

IS/ISO: 6722:2006 as per appropriate class. Conductor cross-

section varying as per circuit requirements, minimum cross-

section 0.5 sq mm. Quality marking may also be as per

equivalent or better European, Japanese, US standards

16.2 Conductor cross section As above and suitable to carry rated current (Japanese auto

Standard JASO D0609-75 AV)


a Fuse

As per AIS 052 - fuse of rated current 1.5 times the load

current of electrical equipment. Necessary in every electrical

circuit

b Isolation switches for electrical circuits where RMS value of voltage

exceeds 100 volts

As per AIS 052- Isolation switch required for each such

circuit

c Location of cables away from heat sources As per AIS 052- Required for each such circuit

d Type approval of circuit diagram as per standards related to electric

equipments/wiring As per AIS 052 - Required for all items

e Cable insulation with respect to heat As per AIS 052

f Battery cut - off switch (isolator switch): Heavy-duty type capable of carrying & interrupting total

circuit load. 1 each near battery/driver

16.4 Wind screen wiper: Electrically operated with two wiper arms & blades, wiper






motor heavy duty steel body with minimum 2-Speed

operation wiping system as per CMVR/BIS 7827 part-1, 2, 3

(Sec.1 & 2)/latest. As per AIS 011

a Wiper motor: Variable speed with time delay relay as per AIS11.

b Wiper arm/blade: AIS 019/AIS011

16.5 Driver cabin fan 1 number, 200mm fan as per provision of CMVR, matching

interiors

16.6 Lighting - internal & external and illumination As per AIS 052.


a Dash Board Tell tale lighting/control lighting As per AIS 052 & bulbs tested for photometry as per IS

1606:1996

b Cabin Lighting - luminous flux of all lamps for cabin lighting As per AIS 052 with illumination level of ≥ 100 lux & ≤ 200

lux

c Passenger area lighting - luminous flux of all lamps for Passenger

area lighting

As per AIS 052 with illumination level of ≥ 100 lux and ≤

150 lux



18.1 Driver seat belt & anchorage duly type approved. ELR recoil type, 3 point mounting as per CMVR & AIS 052

conforming to AIS: 005&015.


Not necessary except diver seat & wheel chair (performance

etc. as per AIS 052) Number:

18.3 Driver/Passenger/wheelchair Seat Belt Anchorage








18.6 Handrails Minimum length*diameter* height above floor in mm Colour contrasting and slip resistant of aluminium tubing 32

mm dia, 3 mm thick.

18.7 Handholds: Colour contrasting and slip resistant. 2 to 4 Numbers. hand

holds per bay

18.8 Stanchions:

Vertically fitted, aluminium tubing with Colour contrasting

and slip resistant. 40 mm dia & 3.15 mm thick. Rest As per

AIS 052. As an alternative to stanchions mounted on bus

floor, stanchions mounted on top of seat frames (new version

seats) be explored (ref figure-2).

18.9 Bells for Passenger convenience High visibility bell pushes shall be fitted at a height of 1.2

meter on all alternate stanchions. These would assist PwDs

18.10 Left blank

18.11 Window Guardrails:

As per AIS 052.


b In all other buses - minimum numbers.


d Other details:



18.12 Entrance/Exit Guard/Step well guard: 800 mm minimum height extending ≥ 100 mm more than

centre line of sitting position of the Passenger.




18.16 Towing device front/rear Heavy duty 1.2 times (minimum) the kerb weight of the bus

with 30o of the longitudinal axis of the bus. As per CMVR &






IS 9760 - ring type


18.18 Fog Lighting As per AIS 052/CMVR


Both made of Steel or impact resistant polymer or

combination of both meeting requirement of an energy

absorbing system



19.1 Windows


b Minimum height of window aperture (clear vision)3 ≥ 500 mm ≥ 950 mm

c Minimum height of upper edge of window aperture from bus floor As per AIS 052





20.1 Specifications a) For up to 42°C of saloon temperature and b) For > 42°C

of saloon temperature

20.2 Target results

a) 24+/- 4°C (Up to 42°C )

b) Temperature Gradient of 15⁰ ( > 42°C of saloon

temperature) e.g. If the saloon temperature is 45o, then the







target temperature inside the bus is 45o-15

o= 30

o

c) Min avg. air velocity at air vent is 4.5 m/s


20.4 Procedure

1. Soak for 1 hour

2. At 2000 rpm

3.Upto 42°C: pull down time 30 minutes (maximum) (for

more than 42°C of saloon temperature, pull down time within

40 min (maximum))

4. Thermocouple to be placed over place minimum 20

numbers. at nose level

20.5

Air curtains on entry/exit gates to avoid loss/gain of heat and or cool

air when doors are frequently opened for boarding/alighting of

Passenger with min air flow of 1000±50 m³/hr at each gate. Type of

air curtains at entry exit gates their power consumption etc be

accounted for while deciding engine power, etc

Required



An air passage/duct/roof hatch to be provided in driver area at

a suitable location for proper inflow of air inside the driver

cab




– speed adjustment

21.2 Maximum noise levels inside the saloon (irrespective of AC, non-

AC/fuel type/engine location)-test procedure as per AIS 020

84 dba (to be achieved a maximum noise level of 81dba from

1st April 2015 onwards)






22 Fuel efficiency requirement

While tendering purchaser may take into account the higher

weight age for more fuel efficient vehicle under standard test

conditions

Chapter - 06

Specifications for Standard size bus of

Premium segment

Specifications for Standard Size Bus of Premium Segment


Bus specifications for Standard Bus of Premium Segment (Air conditioned)


Bus characteristics Maximum floor height:900 mm

Bus floor heights

As per AIS 052 (this segment of buses are envisaged to be more comfortable for

seating passengers with lesser standees). However all buses to be delivered after 1st

April 2015 will follow the same definition as in the case of non-premium buses) i.e.

“low floor area shall not be less than 50% of the total saloon area (excluding front

wheel boxes and driver’s cab) and shall not be ramped in the longitudinal plane”

1 Propulsion system Internal combustion engine, electrical, hybrid, fuel cell

2 Fuels-options Diesel/CNG/ULSD/hydrogen

3 Engine

3.1 Fuel recommended Fuel to be compatible with propulsion system.



operations Maximum vehicle speed of up to 75 kmph bus GVW

b Acceleration (meter/sec²) complemented with

minimum 1000 Nm torque 0.8

c Attain bus speed of 0-30 kmph 9.0 seconds

d Maximum speed ≤ 75 kmph

e Grade ability from stop at 1.5 GVW 17%

f Rated HP/torque preferably at lower rpm range HP rating designed to provide rated torque of minimum 1000 Nm (under full load)

preferably at lower range.

3.3

Maximum Fuel efficiency kmpl or kmpkg. Vehicle

Manufacturer to specify fuel efficiency in terms of

kmpl or kmpkg under standard 13 mode urban

operating cycle and rated loading. While tendering,

purchaser may take into account the higher weight

age for more fuel efficient vehicle

√







3.5 Electronic engine management (EMS) system with

following provisions amongst others:

Full electronic management of engine including on-board diagnostic and driver

alerts e.g. engine oil pressure, engine coolant temperature, engine speed in RPM,


a Fault tracing and diagnostics √

b

Information generation about driver and vehicle

performance as specified as part of ITS

specifications

√

3.5.1 Typical EMS parameters √

a Fuel feed & fuel delivery system status related to: √

i Feed pump pressure √

ii Fuel delivery pressure √

iii Booster pressure and temperature √

b Coolant Status related to: √

i Coolant level √

ii Coolant temperature √

iii Coolant pressure √

c Engine oil status related to: √

i Oil level √

ii Oil temperature √

iii Oil pressure √

d Accelerator pedal position √

e Water in fuel indicator √

f Injector status √

g Engine position timing sensor √

h Engine speed sensor √






i Control and information links √

i SAE J1939 control link √

ii SAE J158 / J1708 Information link √



approximately 0o to 50

oC, humidity level from 5% to 100%, and altitude levels of up

to 2000 meters, generally operating in the semi arid zone/hilly region prevailing in

the area.

3.7 Engine location Rear

3.8

Transmission-heavy duty-

Automatic with torque convertor and in-built

retarder - hydrodynamic type. Neutral during stops.

Reduced engine load at stops (NBS)

√

4 Operational safety - transmission related

4.1 Reverse gear engagement

Transmission system to be fitted with a mechanism which makes it possible to

engage reverse gear only when vehicle is stationary (applicable for automatic &

automatic manual transmission)

4.2 An interlock to prevent the movement of bus when

doors opened √

4.3 Drive shaft lubrication for life √

5 Clutch (front and rear axle) Not applicable

6 Steering system Hydraulic power steering with height and angle adjustments provision. Adjustable

steering column.

7 Suspension system Fully pneumatic complete with ECAS/electronic management and control systems








7.3 Kneeling (mm) 60mm entry/exit side severally & collectively

7.4 An interlock to prevent movement of bus when

kneeled/kneeling √



7.7 Controls Electronically controlled air suspension or superior system

a Electronic control suspension system for √

b Controlling floor level √

c Enhancing comfort by absorbing shocks in case of

road irregularities √

d Uniform spring rate in all loading conditions √

e Self correction of bellow height to √

i Help protect driveline angularity related problems √

ii Counter road unevenness √

iii Monitor bellow failures √

iv Provide passenger comfort √

8 Braking System

Dual circuit full air brakes, with disc type arrangement for front and rear brakes.

Full pneumatic electronically controlled disc brakes with brake blending and

rollback prevention system. Graduated hand controlled, spring actuated parking

brakes acting on rear wheels.







8.1

Anti skid anti brake locking system (ABS)

necessary for urban driving cycle: i) involving high

levels of unexpected braking requirements, ii)

calling for excessive panic braking particularly in

rainy season. iii) Requiring enhanced

manoeuvrability, smooth stopping and low wear

and tear of involved components.

√

8.2

Electronic braking control system (EBS) for

uniform distribution of braking force on all wheels,

contributing to smooth braking, optimizing braking

with minimal pedal force thereby reducing driver

fatigue.

√

8.3 Electronic monitoring of brakes

a Brake pad condition √

b Brake pad temperature condition √


9.1 Batteries

Low maintenance type lead acid batteries for 24 V system- performances as per

BIS: 14257-1995 (latest). 2*12V batteries of 180 Ah capacity. Maintenance free

batteries preferred.


9.3 Alternator 24V- another alternator of similar capacity for AC.


10 Speed limiting device (optional): Electronic type duly approved/certified as per AIS: 018/2001 or latest, tamper proof

and be adjusted to applicable speed limit







12 Fuel tank

On-board fuel storage capacity adequate for bus operation of over 300 km between

consecutive fillings






c Overall height (unladen-at extreme point ) 3800(Maximum)

d Wheel-base 6100 (tolerance: -200 + 400)

e Front overhang As per CMVR

f Rear overhang As per CMVR

13.2 Turning circle radius (mm) As per CMVR

13.3 Floor height above ground (mm) ≤ 900


a Axle clearance (mm) Minimum190

b Minimum ground clearance (un-kneeled) at GVW Within the wheelbase not less than 240mm.


a Angle of approach (unladen) Required ≥ 8.5⁰ (can be proportionately reduced with respect to floor height but

should not be less than 8.0⁰)

b Angle of departure (unladen) Required ≥ 9.0⁰ (can be proportionately reduced with respect to floor height but

should not be less than 8.5⁰)

c Ramp over angle (half of break-over angle) ≥ 4.8⁰

14 Bus gates/Doors






14.1 Location of gates Location on near side

14.2 Type of doors Swing in/out type


b Opening closing time in seconds per operation ≤ 4

c Positions of door controls ensuring display of

open/close status on dash board

On dashboard, as also inside & outside of doors for emergency operation and at

stanchions for Passenger access

d

Passenger safety system - allowing bus motion on

doors closing and doors opening only when the bus

is stopped

Mandatory


a Door aperture (without flaps) in mm 1200 (minimum)




e Number of gates 1

14.4 Rear service doors (near side): √

a Door aperture (without Flaps) in mm 1200 (minimum)



d Positioning rear door Preferably rear edge of gate 1500 mm ahead of central line of rear axle or front edge

of gate 1500 mm behind central line of rear axle

e Number of gates 1

14.5 Maximum first step height (mm) from ground -

unladen & un-kneeled position in buses with:









b if door behind rear axle NA


Sunken type wrap over (manually operated) ramp,

for wheel chair of PwDs, fitted on floor at gate

(preferably at front gate) in front of PwD seat

anchorage. Suitable design mechanism

for > 400mm floor ht

considering that floor level of

bus stops are at 400mm

a Dimensions Width ≥ 900 mm


c Load carrying capacity > 300 kg

d Device to prevent the wheel chair roll off the sides

when the length exceeds 1200mm √


f Kneel ramp control Kneeling arrangement for kneeling on left side severally and combined. Kneeling

up to 60mm


h Wheel chair anchoring- minimum for one wheel

chair √

i Priority seats- minimum 2 seats √

j Stop request- on every pillar √

k Place to keep PwD assists like cane, etc √

l Colour contrasting/other guidance for persons with

visual deficiencies √

m Any other provisions to meet requirement of

disabilities Act 1995 √






14.8 Emergency doors/exits or apertures (numbers) As per AIS 052

a Dimensions mm As per AIS 052

14.9 Door closing requirements for bus movement - Bus could move only after door closing completed

a

Power operated service door - construction &

control system of a power operated service door be

such that a Passenger is unlikely to be

injured/trapped between the doors while closing.

As per AIS 052

b Door components As per AIS 052

c Door locks/locking systems/door retention items As per AIS 052

d Door hinges As per AIS 052

15 Bus body

15.1 Design type approval

a

Design type approval- all bus body structures &

structural aggregates be designed to fulfil the

loading, operating & performance parameters using

finite element analysis or any other analytic

technique for: Required

Strength

Stiffness

Structural Stability

Vibration

Safety

15.2 Structural performance

a Bus structure to meet requirements of:






i Body structure strength test-

each type of vehicle be subjected to roll over test on

complete vehicle/specified representative section

thereof or to an alternate method approved by the

test agency

As per AIS 052

ii Stability As per AIS 052

iii Deflection √

iv Vibrations √

v Roll over protection √

vi

Joint strength- body panel joints meet requirements

of holding the joined panel when subjected to force

of 60% of tensile strength of weakest joined body

panel.

As per AIS 052

b Various loads:

i

Normal loads (static) = Number of

Passenger*weight of Passenger (68 Kgs.) +

Passenger luggage weight (7 Kgs). (Besides the

vehicle related loads).

√

ii

Bump loads: # Bump height = As per relevant

BIS/Indian Road Congress guidelines. # Case I:

single wheel on bump/pot hole. # Case II:

diagonally opposite wheels on Bump/Pot hole. #

Case III: both wheels (front & rear) on bump/pot

hole.

√

iii Braking loads: 0.6g (applied together). Horizontal =

0.6g load, Vertical = 1g load √






c Bus body structure evaluation by a & or b As under

i Physical testing or As per AIS 052

ii Finite element method As per AIS 052

d Required performance values/data (minimum) for

above load conditions: As under

i Strength (factor of safety) (tolerance -10%) ≥ 3 i.e. design stress ≥ 1/3rd

of yield stress

ii Stiffness (deflection) mm 5mm

iii Vibrations (lowest natural frequency) hertz 5Hz

iv

Roll over tests with the bus rolling from ground

level instead of a raised platform. Angular velocity

should not exceed 5 degrees/second. All other

procedure as per AIS031 (i) Unstable position should not occur before 35⁰. ( ii) No part of structure intrudes

into residual space. 1. Bus tilted to its unstable position

2. Bus allowed falling freely under gravity from this

position.

3. GVW of the bus to be considered

v

4. Energy absorbed by the structure {ER =Reference

energy-- potential energy of the bus in its (unstable)

equilibrium position). ER = M*g*h Where M=

Effective weight of the bus, g = Acceleration due to

gravity, h= Height of C.G. above ground level in

(unstable) equilibrium position.}.

0.75 ER

vi Buckling factor ≥ 4

15.3 Bus structure- materials specs etc

a Super structure Material to be decided by the manufacturer OR as per the tender specifications






b Under structure: issues by purchaser. Other requirements as per bus body code. Material should fulfil

strength etc. requirements indicated above

c Panelling

i Roof panelling: interior

Material to be decided by the manufacturer OR as per the tender specifications

issues by purchaser. Other requirements as per bus body code Material should fulfil

strength etc. requirements indicated above.

ii Roof panelling: exterior

iii Side panelling: interior

iv Other side panels:

v

Stretch panel: Exterior side panels of stretched steel

sheet at different waist levels along length of the

bus

vi Skirt Panel

vii Front end interior

viii Front end exterior

ix Rear end interior

x Rear end exterior

15.4 Insulation Material to be decided by the manufacturer subject to meeting requirement of flame

retardancy, fire proofing and non-in flammability as per applicable standards

a Roof structure Flame retardant/non flammable-- polyurethane/glass wool IS 15061or latest of

density 40 Kg/m3 minimum.

b Engine compartment Fire retardant preferably ceramic fibre 128 kg/m3


a Rub rail Aluminium extrusion IS 733/1983 or better







c Wire cover

d Wearing strip

e Foot step edging

f Panel beading

g Window frame



a Type of floor Flat except at wheel arches in the low floor area of bus- seats may be located over

the wheel arches

b Steps on floor For 400 mm floor height: No steps except those

necessary for the rear high floor area

For higher floor height: steps

in the low floor area either at

gates or across the floor.

Steps may be provided as

necessary on high floor in the

rear side

c Maximum floor slope 6 %

d Floor surface material

12 mm thickness phenolic resin bonded densified laminated compressed wooden

floor board (both side plain surface) having density of 1.2 gms/cc conforming to IS

3513 (Part-3): type VI 1989 or latest. The flooring should also be boiling water

resistant as for marine board BIS 710-1976/ latest and fire retardant as per BIS

5509-2000 (IS 15061:2002)






e Anti – skid material 3 mm thick anti-skid type silicon grains ISO 877/76 for colour, IS5509 for fire

retardancy

15.7 Safety glasses and fittings Single piece windshield, stylish exterior, combination head lamps etc

a


Single piece laminated safety glass, with PVB film IS 2553 (Part-2)-1992/latest.

Front wind screen glass shape may be curved or plain, flat/curved with curved

corners, to match vehicle design and contours etc.

Size: Standard designs for each variant of buses to be followed. (Refer Annexure 1)

b Rear windscreen: (wherever provided)

Single piece flat/curved or plain/flat at centre & curved at corners to match vehicle

contours/design. Rear wind screen glass be toughened glass IS: 2553(Part-2)–

1992/latest.


c

Side windows: Large flat/curved to match bus shape and contour, 1-piece design-fixed toughened

glass IS2553 (Part-2)-1992/latest.


Minimum window glass/aperture area (main

windows) in cm² 14000

Light transmission (%) in case of tinted glasses As per CMVR

d Window & other glasses - material specifications,

thickness etc Tinted and toughened as per IS 2553 (Part-2)–1992/latest of 4.8-5.3 mm thickness

e Safety glass As per AIS 052/CMVR

f Rear view mirrors As per AIS 052






15.8 Seating and gangway etc for ACX buses generally

as per AIS 052

Ergonomically designed seats with soft cushion head seats rest, spacious gangway

etc.

15.8.1 Passenger seating’s for ACX type-1 buses As per AIS 052



c Seat area/seat space per Passenger (width*depth)

mm as per AIS 052 450*450

d Seat pitch - minimum: mm as per AIS 052 750

e

Minimum backrest height- from floor to top of

seat/headrest 1100 mm from floor as per AIS 052

Seat base height- distance from floor to horizontal

front upper surface of seat cushion mm As per AIS 052

f Torso angle Minimum 15⁰ with option of reclining adjustable seats

g

Passenger seats with high back rest, contoured to

suit human body, padded and provided with head

rest

√

h Seat materials Cushioned seats with polyurethane foam as per IS15961-2002.

i Seat frame structure material where required Frame structure of ERW steel or aluminium tubes/sheets/formed sections

j Free height over seating position mm More than 900







k Clearance space for seated Passenger facing

partition mm As per AIS 052

l

Seat back/Pad material/thickness: Polyurethane foam IS15061:2002, 50± 5 mm

Type Suitably moulded/fabricated and padded with > 50 mm foam with cloth upholstery

Upholstery Pile fabric/jekard 0.7-1.0 mm thickness

m Area for seated passengers (sq.mm) 450*450

n Area for standee passengers (sq.mm) As per bus code

o Number of seats including one for wheel chair 32 - 34

p Number of standees (calculation as per AIS 052) As per AIS 052

q Sitting/Standing Ratio Not required

r Headrest Required

s Seats side facing location Not suggested except on wheel arches

t Seat arm As per AIS 052

u Magazine pouch Required

v Individual seat row fans Required if ventilation provisions are inadequate in the event of AC failures

w Reading lights individual Required

x Seat back rest Reclining

y Seat belts & their anchorage Not necessary except diver seat & wheel chair (performance etc. as per AIS 052)

z Performance & strength requirements of driver &

passenger seats As per AIS 052

15.8.2 Gangway: Minimum 600 mm

a Minimum interior head room (centre line of

gangway) mm 1900 including that in the rear overhang area.









b

Gangway width (mm) from gates to longitudinal

space between seats (access to service doors) Minimum 600 mm

Gangway width (mm) in longitudinal space

between seats Minimum 600 mm


between seats (rear of rear edge of the rear door in

rear engine bus)

Minimum 600 mm

c

Slope of the gangway in type I ACX bus As per AIS 052

General

Gangway slope in zone rearward of a transverse

vertical plane situated 1500 mm forward of the

centre line of the rear axle

As per AIS 052

15.9

Driver’s work place/cabin/seat etc As per AIS 052

Driver work place/cabin provided with more

privacy, safety and easy access to controls and inter

alia equipped with:

State of art driver cockpit station.

a Reverse gear camera As per ITS specifications

b Door cameras As per ITS specifications

c Lights control √

d Fans and/or other means of ventilation & air

circulation in the event of failure of AC √






e Driver’s seat generally as per AIS 023 and duly

equipped with As per AIS 023 & AIS 052

i Three way seat adjustments facility and controls √

ii Air suspension system √

15.10 Corrosion prevention & painting Corrosion prevention treatment/painting for structural members/components,

assembled structure, panels etc

a


All materials & joints would withstand a two weeks (336 hours) salt spray test in

accordance with ASTM procedure B117 with no structural detrimental effect to

normally visible surfaces & no weight loss of over 1%. Other details As per AIS 052

Internal surfaces of structural members As above

External surfaces of structural members As above for internal surfaces of tubular structural members corrosion prevention


As above for corrosion prevention if any riveting and or welding operations carried

out after treatment , etc,

corrosion free guaranteed life of bus items/structure in years/km

Inter metallic galvanic corrosion prevention Required

b Primer coating Suitable specification and performance

c Painting

PU paint panel etch primer, PU primer surface, PU top coat BIS 13213:1991 or

latest/international standard as applicable for exterior painting including interior

wherever required. shades–IS 5-1978 (or latest) class-A2

16 Electricals

16.1 Electrical Cables

BIS marked, copper conductors with fire retardant as per IS/ISO:6722:2006 as per

appropriate class. conductor x-sec varying as per circuit requirements, minimum

cross-section 0.5 sq mm. quality marking may also be as per equivalent or better

European, Japanese, US standards






16.2 Conductor cross section As above and suitable to carry rated current (Japanese Auto Standard JASO D0609-

75 AV)


a Fuse As per AIS 052 - fuse of rated current 1.5 times the load current of electrical

equipment. Necessary in every electrical circuit

b Isolation switches for electrical circuits where RMS

value of voltage exceeds 100 volts As per AIS 052. Isolation switch required for each such circuit

c Location of cables away from heat sources As per AIS 052- required for each such circuit

d Type approval of circuit diagram as per standards

related to electric equipments/wiring As per AIS 052 - required for all items

e Battery cut - off switch (isolator switch) Heavy-duty type capable of carrying & interrupting total circuit load.1 each near

battery/driver

16.4 Wind screen wiping & washing system, demister

etc:

Pantograph type electrically operated with two wiper arms & blades; wiper motor

heavy-duty steel body with minimum 2-speed operation; wiping system as per

CMVR/BIS 7827 Part-1, 2, 3 (Sec.1 & 2)/latest. As per AIS 011

a Wiper motor Variable speed with time delay relay as per IS011.20-24 cycles/sec, 24 V*150W

minimum.

b Wiper arm/blade Pantograph type. AIS 019/AIS011

c Wind screen washing system √

d Capacity of washing system tank litres minimum 10

16.5 Driver Cabin Fan 1 number, 200 mm fan. As per provision of CMVR, matching interiors









b Cabin lighting- luminous flux of all lamps for cabin


c Passenger area lighting -luminous flux of all lamps

for Passenger area lighting As per AIS 052 with illumination level of ≥ 100 lux and ≤ 150 lux

17 ITS As specified separately under ITS specifications

18 Safety related items

18.1 Driver seat belt & anchorage duly type approved ELR recoil type, 3 point mounting as per CMVR & bus code. Conforming to AIS

005 & AIS 015

18.2

Passengers seat belt

Not necessary except diver seat & wheel chair (performance etc. as per AIS 052) Number

18.3 Driver/Passenger/Wheelchair seatbelt anchorage

18.4 Fire extinguisher Dry chemical powder type GSR– 853 (E) dated 19.11.2000 (or latest)/As per AIS

052, 2 kg each, ISI Marked

18.5 First aid box 1 Number, as per provision of CMVR

18.6 Handrails Minimum length*diameter*height above

floor: mm

Colour contrasting and slip resistant of aluminium tubing. 32 mm diameter, 3 mm

thick.

18.7 Handholds Colour contrasting and slip resistant. 2 to 4 Numbers. Hand holds per bay. Other

details as per AIS 052

18.8 Stanchions Vertically fitted, aluminium tubing with Colour contrasting and slip resistant. 40

mm diameter & 3.15 mm thick. Other details as per AIS 052






18.9 Bells for Passenger convenience High visibility bell pushes shall be fitted at a height of 1.2 meter on all alternate

stanchions. These would assist PwDs

18.10 Entrance/Exit Guard/Step well guard: 800 mm minimum height extending ≥ 100mm more than centre line of sitting

position of the Passenger.



18.13 Mirrors right/left side exterior/interior Convex As per AIS 001 & 002. Interior with double curvature

18.14 Towing device front/rear Heavy duty 1.2 times (minimum) the kerb weight of the bus within 30

o of the

longitudinal axis of the bus. As per CMVR & IS 9760 - Ring Type




Both made of steel or impact resistant polymer or combination of both meeting

requirement of an energy absorbing system


18.18 Gas leak detection system for CNG fuelled engines √ √

18.19 Fire detection system √ √

18.20 Fire suppression system √ √


19.1 Windows

a Type of window Large tinted window panes for ACX bus

b Minimum height of window aperture (clear vision) ≥ 1200 mm in type I -ACX

c Minimum height of upper edge of window aperture

from bus floor As per AIS 052







19.2 Cabin luggage carrier (CLC) As per AIS 052

a Positioning of CLC

i Width from side wall (mm) 250

ii Height from roof (mm) 200

b Design & material "ABS (acrylonitrile butadiene styrene) ASTM-BS368/better or similar to that in

Passenger aero planes

c Additional provisions at the underside of CLC √

i Individual seat reading light At the discretion of purchaser. Bus should be enabled

ii Individually adjustable air conditioning knob At the discretion of purchaser. Bus should be enabled

iii Call button At the discretion of purchaser. Bus should be enabled

19.3 Passenger entertainment and other miscellaneous

items

a Touch screen setting type TV for individual seats At the discretion of purchaser. Bus should be enabled

b Audio ports at arm rest for TV and piped music At the discretion of purchaser. Bus should be enabled

c Head phone (replaceable loose item on demand) At the discretion of purchaser. Bus should be enabled

d Folding table for each seat √

e Magazine pouch √

f Adjustable foot rest At the discretion of purchaser. Bus should be enabled

g Back rest adjustment knob in case of reclining seats √

h Power ports on each seat to facilitate use of laptop,

MP3 player, USB etc √

i Cluster of mobile phone charging points √






20 Air conditioning system - operational

conditions/other requirements etc.

20.1 Specifications a) For up to 42°C of saloon temperature and b) For > 42°C of saloon temperature

20.2 Target results a) 23+/- 1°C (for all temperature ranges)

b) Minimum average air velocity at air vent is 4.5 m/s


20.4 Procedure

1. Soak for 1 hour

2. At 2000 rpm

3.Upto 42°C: pull down time 30 minutes (maximum) (for more than 42°C of saloon

temperature, pull down time within 40 minutes (maximum))

4. Thermocouple to be placed over place minimum 20 numbers. at nose level

20.5

Air curtains on entry/exit gates to avoid loss/gain of

heat and or cool air when doors are frequently

opened for boarding/alighting of Passenger with

minimum air flow of 1000±50 m³/hr at each gate

Optional

20.6 Individual seat air flow adjustment system Required

20.7 Air conditioning system in driver work place As in saloon

21 Noise, vibration and harshness (NVH) levels

(interior)

21.1

Maximum noise levels inside the saloon

(irrespective of AC, non-AC/fuel type/engine

location)-test procedure as per AIS 020

≤ 75 Db(A) (to be achieved a maximum noise level of 72 Db(A) from 1st April 2015

onwards)

21.2 Vibration levels






a Vibration levels at driver/Passenger seats

(meter/sec²) ≤ 0.5

b Vibration level in gangway (meter/sec²) ≤ 1

21.3

Harshness levels when measured under city driving

conditions on city roads with pot holes and speed

breakers, etc

a Noise level in saloon from drive axle, etc Nil

b Dominant frequencies to fall outside the ranges of 0.5-1 Hz, 5-7 Hz and 18-20 Hz

c Transient vibration level in seating area maximum 1g

d Transient vibration level at driver seat maximum 0.1g

22 Life cycle requirements of bus (whichever is

earlier) 15 years or 12,00,000 km

Chapter - 07

Specifications for Midi bus of Premium

segment

Specifications for Midi Bus of Premium Segment


Bus specifications for Midi Bus of Premium Segment (Air conditioned)



Bus floor heights

As per AIS 052 (this segment of buses are envisaged to be more comfortable for

seating passengers with lesser standees). However all buses to be delivered after 1st

April 2015 will follow the same definition as in the case of non-premium buses) i.e.

“low floor area shall not be less than 50% of the total saloon area (excluding front

wheel boxes and driver’s cab) and shall not be ramped in the longitudinal plane”

1 Propulsion system Internal combustion engine, electrical, hybrid, fuel cell

2 Fuels-options Diesel/CNG/ULSD/hydrogen

3 Engine

3.1 Fuel recommended Fuel to be compatible with propulsion system



operations Maximum vehicle speed of up to 75 kmph bus GVW

b Acceleration (meter/sec²) complemented with

minimum 1000 Nm torque 0.9

c Attain bus speed of 0-30 kmph 9.0 seconds

d Max speed ≤ 75 kmph

e Grade ability from stop at 1.5 GVW (%) 17

f Rated HP/torque preferably at lower rpm range HP rating designed to provide rated torque of minimum 1000 Nm (under full load)

preferably at lower rpm range.

3.3

Maximum fuel efficiency kmpl or kmpkg. Vehicle

Manufacturer to specify fuel efficiency in terms of

kmpl or kmpkg under standard 13 mode urban

operating cycle and rated loading. While tendering,

purchaser may take into account the higher weight age

for more fuel efficient vehicle

√







3.5 Electronic engine management (EMS) system with

following provisions amongst others:

Full electronic management of engine including on-board diagnostic and driver

alerts e.g. engine oil pressure, engine coolant temperature, engine speed in RPM,


a Fault tracing and diagnostics √

b Information generation about driver and vehicle

performance as specified as part of ITS specifications √

3.5.1 Typical EMS parameters √

a Fuel feed & fuel delivery system status related to: √

i Feed pump pressure √

ii Fuel delivery pressure √

iii Booster pressure and temperature √

b Coolant Status related to: √

i Coolant level √

ii Coolant temperature √

iii Coolant pressure √

c Engine oil status related to: √

i Oil level √

ii Oil temperature √

iii Oil pressure √

d Accelerator pedal position √

e Water in fuel indicator √

f Injector status √

g Engine position timing sensor √

h Engine speed sensor √

i Control and information links √






i SAE J1939 control link √

ii SAE J1587 / J1708 Information link √

3.6 Engine operational requirements √

3.7 Engine location Rear

3.8

Transmission-heavy duty-

Automatic with torque convertor and in-built retarder -

hydrodynamic type. Neutral during stops. Reduced

engine load at stops (NBS)

√

4 Operational safety - transmission related

4.1 Reverse gear engagement

Transmission system to be fitted with a mechanism which makes it possible to

engage reverse gear only when vehicle is stationary (applicable for automatic &

automatic manual transmission)

4.2 An interlock to prevent the movement of bus when

doors opened √

4.3 Drive shaft lubrication for life √

5 Clutch Not applicable

6 Steering system Hydraulic power steering with height and angle adjustments provision. Adjustable

steering column.

7 Suspension system Fully pneumatic complete with ECAS/electronic management and control systems



7.3 Kneeling (mm) 60 mm entry/exit side severally & collectively

7.4 An interlock to prevent movement of bus when

kneeled/kneeling √ √








7.7 Controls Electronically controlled air suspension or superior system

a Electronic control suspension system for: √

b Controlling floor level √

c Enhancing comfort by absorbing shocks in case of

road irregularities √

d Uniform spring rate in all loading conditions √

e Self correction of bellow height to: √

i Help protect driveline angularity related problems √

ii Counter road unevenness √

iii Monitor bellow failures √

iv Provide passenger comfort √

8 Braking System

Dual circuit full air brakes, with disc type arrangement for front and rear brakes.

Full pneumatic electronically controlled disc brakes with brake blending and

rollback prevention system. Graduated hand controlled, spring actuated parking

brakes acting on rear wheels.

8.1

Anti skid anti brake locking system (ABS) necessary

for urban driving cycle: i) involving high levels of

unexpected braking requirements, ii) calling for

excessive panic braking particularly in rainy season.

iii) Requiring enhanced manoeuvrability, smooth

stopping and low wear and tear of involved

components.

√







8.2

Electronic braking control system (EBS) for uniform

distribution of braking force on all wheels,

contributing to smooth braking, optimizing braking

with minimal pedal force thereby reducing driver

fatigue.

√

8.3 Electronic monitoring of brakes

a Brake pad condition √

b Brake pad temperature condition √


9.1 Batteries:

Low maintenance type lead acid batteries for 24 V system- performances as per

BIS: 14257-1995 (latest). 2*12V batteries of 180 Ah capacity. Maintenance free

batteries preferred


9.3 Alternator 24V- another alternator of similar capacity for AC.


10 Speed limiting device (optional) Electronic type duly approved/certified as per AIS: 018/2001 or latest, tamper proof

and be adjusted to applicable speed limit


12 Fuel tank

On-board fuel storage capacity adequate for bus operation of over 250 km between

consecutive fillings




a Overall length (over body excluding bumper) in mm ≤ 9400

b Overall width (sole bar/floor level- extreme points) in

mm 2600 (maximum)






c Overall height (unladen)-(at extreme point ) 3800(maximum)

d Wheel-base ≤ 5000

e Front overhang in mm As per CMVR

f Rear overhang As per CMVR

13.2 Turning circle radius (mm)-maximum 10 meters As per CMVR

13.3 Floor height above ground (mm) ≤ 900


a Axle clearance (mm) Minimum190

b Minimum ground clearance (un-kneeled) at GVW Within the wheelbase not less than 240 mm.


a Angle of approach (unladen) ≥ 8.0⁰

b Angle of departure (unladen) ≥ 8.5⁰

c Ramp over angle (half of break-over angle) ≥ 4.8⁰

14 Bus body

14.1 Location of gates Location on near side

14.2 Type of doors Swing in/out type


b Opening closing time in seconds per operation ≤ 4

c Positions of door controls ensuring display of

open/close status on dash board

On dashboard, as also inside & outside of doors for emergency operation and at

stanchions for Passenger access

d


doors closing and doors opening only when the bus is

stopped

Mandatory











e Number of gates 1

14.4 Rear service doors (near side): Optional




d Positioning rear door Preferably rear edge of gate 1500 mm ahead of central line of rear axle or front edge

of gate 1500 mm behind central line of rear axle

e Number of gates 1

14.5 Maximum first step height(mm) from ground -





b if door behind rear axle NA


Sunken type wrap over (manually

operated) ramp, for wheel chair of PwDs,

fitted on floor at gate (preferably at front

gate) in front of PwD seat anchorage. Suitable design mechanism for >

400mm floor ht considering that floor

level of bus stops are at 400mm a Dimensions Width ≥ 900 mm









when the length exceeds 1200mm √


f Kneel ramp control Kneeling arrangement for kneeling on left side severally and combined. Kneeling

up to 60mm


h Wheel chair anchoring- minimum for one wheel chair √

i Priority seats- minimum 2 seats √

j Stop request- on every pillar √

k Place to keep PwD assists like cane, etc √

l Colour contrasting/other guidance for persons with

visual deficiencies √

m Any other provisions to meet requirement of

disabilities Act 1995 √

14.8 Emergency doors/exits or apertures (numbers) As per AIS 052

Dimensions mm As per AIS 052

14.9 Door closing requirements for bus movement - Bus could move only after door closing completed

a


system of a power operated service door be such that a

Passenger is unlikely to be injured/trapped between

the doors while closing.

As per AIS 052

b Door components As per AIS 052

c Door locks/locking systems/door retention items As per AIS 052

d Door hinges As per AIS 052






15 Bus body


a


structural aggregates be designed to fulfil the loading,

operating & performance parameters using finite

element analysis or any other analytic technique for:

Required Strength

Stiffness


Vibration

Safety






thereof or to an alternate method approved by the test

agency

As per AIS 052


iii Deflection √

iv Vibrations √


vi Safety √






vii

Joint strength- body panel joints meet requirements of

holding the joined panel when subjected to force of

60% of tensile strength of weakest joined body panel.

As per AIS 052

b Various loads:

i

Normal loads (static) = Number of Passenger*weight

of Passenger (68 Kgs.) + Passenger luggage weight (7

Kgs). (Besides the vehicle related loads).

√

ii



single wheel on bump/pot hole. # Case II: diagonally

opposite wheels on Bump/Pot hole. # Case III: both

wheels (front & rear) on bump/pot hole.

√



c Bus body structure evaluation As under






of yield stress








iv

Roll over tests with the bus rolling from ground level

instead of a raised platform. Angular velocity should

not exceed 5 degrees/sec. All other procedure as per

AIS031 (i) Unstable position should not occur before 35⁰. (ii) No part of structure intrudes

into residual space. 1 Bus tilted to its unstable position


position.


v





gravity, h= height of C.G. above ground level in


0.75 ER


15.3 Bus structure- materials specifications etc

a Super structure Material to be decided by the manufacturer OR as per the tender specifications

issues by purchaser. Other requirements as per bus body code. Material should fulfil

strength etc. requirements indicated above b Under structure:

c Panelling

i Roof panelling: interior Material to be decided by the manufacturer OR as per the tender specifications

issues by purchaser. Other requirements as per bus body code. Material should fulfil

strength etc. requirements indicated above

ii Roof panelling: exterior

iii Side panelling: interior

iv Other side panels:






v Stretch panel: Exterior side panels of stretched steel

sheet at different waist levels along length of the bus

vi Skirt panel

vii Front end interior

viii Front end exterior

ix Rear end interior

x Rear end exterior

15.4 Insulation Material to be decided by the manufacturer subject to meeting requirement of flame

retardancy, fire proofing and non-in flammability as per applicable standards

a Roof structure Flame retardant/non flammable-- polyurethane/glass wool IS 15061or latest of

density 40 Kg/m3 minimum.

b Engine compartment Fire retardant preferably ceramic fibre 128 kg/m3


a Rub rail



c Wire cover

d Wearing strip

e Foot step edging

f Panel beading

g Window frame



a Type of floor Flat except at wheel arches in the low floor area of bus- seats may be located over

the wheel arches






b Steps on floor

For 400 mm floor height: no steps except

those necessary for the rear high floor

area

For higher floor height: steps in the low

floor area either at gates or across the

floor. Steps may be provided as

necessary on high floor in the rear side

c Maximum floor slope 6 %

d Floor surface material

12 mm thickness phenolic resin bonded densified laminated compressed wooden

floor board (both side plain surface) having density of 1.2 gms/cc conforming to IS

3513 (Part-3): type VI 1989 or latest. The flooring should also be boiling water

resistant as for marine board BIS 710-1976/ latest and fire retardant as per BIS

5509-2000 (IS 15061:2002)

e Anti – skid material 3 mm thick anti-skid type silicon grains ISO 877/76 for colour, IS5509 for fire

retardancy

15.7 Safety glasses and fittings: Single piece windshield, stylish exterior, combination head lamps etc

a Front windscreen (laminated) glass:

Single piece laminated safety glass, with PVB film IS 2553 (Part-2)-1992/latest.

Front wind screen glass shape may be curved or plain, flat with curved corners, to

match vehicle design and contours etc.



Single piece curved or plain/flat/curved at centre & curved at corners to match

vehicle contours/design. Rear wind screen glass be toughened glass IS 2553(Part-

2)–1992/latest.


c Side windows:

Large flat/curved to match bus shape and contour, 1-piece design-fixed toughened

glass IS2553 (Part-2)-1992/latest.







Minimum window glass/aperture area (main windows)

cm² >10000

Light transmission (%) in case of tinted glasses As per CMVR

d Window & other glasses - material specs, thickness

etc Tinted and toughened as per IS 2553 (Part-2)–1992/latest of 4.8-5.3 mm thickness

e Safety glass As per bus code AIS 052/CMVR

f Rear view mirrors As per bus code AIS 052

15.8 Seating and gangway etc for ACX buses generally as

per AIS 052

Ergonomically designed seats with soft cushion head seats rest, spacious gangway

etc.

15.8.1 Passenger seating’s for ACX type-1 buses As per bus code AIS 052



c Seat area/seat space per Passenger (width*depth) mm

as per AIS 052 450*450

d Seat pitch - minimum: mm as per AIS 052 750

e

Minimum backrest height -from floor to top of

seat/headrest 1100 mm from floor as per AIS 052

Seat base height- distance from floor to horizontal

front upper surface of seat cushion mm As per AIS 052

f Torso angle Minimum 15⁰ with option of reclining adjustable seats

g Passenger seats with high back rest, contoured to suit

human body, padded and provided with head rest √

h Seat materials Cushioned seats with polyurethane foam as per IS15961-2002.

i Seat frame structure material where required Frame structure of ERW steel or aluminium tubes/sheets/formed sections

j Free height over seating position mm More than 900







k Clearance space for seated Passenger facing partition

mm As per AIS 052

l

Seat back/Pad material/thickness: Polyurethane foam IS15061:2002, 50± 5 mm

Type Suitably moulded/fabricated and padded with > 50 mm foam with cloth upholstery

Upholstery Pile fabric/jekard 0.7-1.0 mm thickness

m Area for seated passengers (sq.mm) 450*450

n Area for standee passengers (sq.mm) As per AIS 052

o Number of seats including one for wheel chair 23- 34

p Number of standees (calculation as per AIS 052) As per AIS 052

q Sitting/Standing ratio Not required

r Headrest Required

s Seats side facing location Not suggested except on wheel arches

t Seat arm As per AIS 052

u Magazine pouch Required

v Individual seat row fans Required if ventilation provisions are inadequate in the event of AC failures

w Reading lights individual Required

x Seat back rest Reclining

y Seat belts & their anchorage Not necessary except diver seat & wheel chair (performance etc. as per AIS 052)

z Performance & strength requirements of: √

i Driver seat (fully air suspended) AIS 023

ii Passenger seats AIS 023

15.8.2 Gangway: Minimum 600 mm






a Minimum interior head room (centre line of gangway)

mm 1900 including that in the rear overhang area.




b Gangway width (mm) from gates to longitudinal

space between seats (access to service doors) Minimum 600 mm

c Gangway width (mm) in longitudinal space between

seats Minimum 600 mm

d

Gangway width (mm) in longitudinal space between

seats (rear of rear edge of the rear door in rear engine

bus)

Minimum 600 mm

e

Slope of the gangway As per AIS 052

General

Gangway slope in zone rearward of a transverse

vertical plane situated 1500 mm forward of the

centre line of the rear axle

As per AIS 052

15.9

Driver’s work place/cabin/seat etc As per AIS 052

Driver work place/cabin provided with more privacy,

safety and easy access to controls and inter alia

equipped with:

State of art driver cockpit station.

a Reverse gear camera As per ITS specifications

b Door cameras, as specified as part of ITS

specifications As per ITS specifications

c Lights control √






d Fans and/or other means of ventilation & air

circulation in the event of failure of AC √

e Driver’s seat generally as per AIS 023 and duly

equipped with AIS 023 & AIS 052

i Three way seat adjustments facility and controls √

ii Air suspension system √


assembled structure, panels etc

a


All materials & joints would withstand a two weeks (336 hours) salt spray test in

accordance with ASTM procedure B117 with no structural detrimental effect to

normally visible surfaces & no weight loss of over 1%. Other details as per AIS 052

Internal surfaces of structural members As above

External surfaces of structural members As above for internal surfaces of tubular structural members corrosion prevention


As above for corrosion prevention if any riveting and or welding operations carried

out after treatment , etc,

corrosion free guaranteed life of bus items/structure in years/km

Inter metallic galvanic corrosion prevention Required

b Primer coating Suitable specification and performance

c Painting

PU paint panel etch primer, PU primer surface, PU top coat BIS 13213:1991 or

latest/international standard as applicable for exterior painting including interior

wherever required. shades–IS 5-1978 (or latest) class-A2

16 Electricals

16.1 Electrical cables

BIS marked, copper conductors with fire retardant as per IS/ISO:6722:2006 as per

appropriate class. conductor x-sec varying as per circuit requirements, minimum

cross-section 0.5 sq mm. quality marking may also be as per equivalent or better







16.2 Conductor cross section As above and suitable to carry rated current (Japanese Auto standard JASO D0609-

75 AV)


a Fuse As per AIS 052 - fuse of rated current 1.5 times the load current of electrical

equipment. Necessary in every electrical circuit


value of voltage exceeds 100 volts As per AIS 052. Isolation switch required for each such circuit

c Location of cables away from heat sources As per AIS 052- required for each such circuit


related to electric equipments/wiring As per AIS 052 - required for all items

e Battery cut - off switch (isolator switch): Heavy-duty type capable of carrying & interrupting total circuit load. One each near

battery/driver

16.4 Wind screen wiping & washing system, demister etc:

Pantograph type electrically operated with two wiper arms & blades; wiper motor

heavy-duty steel body with minimum 2-speed operation; wiping system as per

CMVR/BIS 7827 Part-1, 2, 3 (Sec.1 & 2)/latest. As per AIS 011

a Wiper motor Variable speed with time delay relay as per IS011.20-24 cycles/sec, 24 V*150W

minimum.

b Wiper arm/blade Pantograph type. AIS 019/AIS011

c Wind screen washing system √

d Capacity of washing system tank litres minimum 10

16.5 Driver Cabin Fan 1 number, 200 mm fan. As per provision of CMVR, matching interiors




b Cabin lighting- luminous flux of all lamps for cabin







c Passenger area lighting -luminous flux of all lamps for


17 ITS As specified separately under ITS specifications

18 Safety related items

18.1 Driver seat belt & anchorage duly type approved. ELR recoil type, 3 point mounting as per CMVR & bus code. Conforming to AIS:

005 & 015.

18.2 Passengers seat belt

Not necessary except diver seat & wheel chair (performance etc. as per AIS 052) Number

18.3 Driver/Passenger/Wheelchair seatbelt anchorage

18.4 Fire extinguisher Dry chemical powder type GSR– 853 (E) dated 19.11.2000 (or latest)/As per AIS

052, 2 kg each, ISI Marked

18.5 First aid box 1 Number, as per provision of CMVR

18.6 Handrails minimum length*diameter*height above

floor in mm

Colour contrasting and slip resistant of aluminium tubing. 32 mm diameter, 3 mm

thick.

18.7 Handholds Colour contrasting and slip resistant. 2 to 4 Numbers. Hand holds per bay. Other

details as per AIS 052

18.8 Stanchions Vertically fitted, aluminium tubing with colour contrasting and slip resistant. 40 mm

diameter & 3.15 mm thick. Other details as per AIS 052

18.9 Bells for Passenger convenience High visibility bell pushes shall be fitted at a height of 1.2 meter on all alternate

stanchions. These would assist PwDs

18.10 Entrance/Exit guard/Step well guard 800 mm minimum height extending ≥ 100 mm more than centre line of sitting

position of the Passenger.




18.14 Towing device front / rear Heavy duty 1.2 times (minimum) the kerb weight of the bus within 30o of the






longitudinal axis of the bus. As per CMVR & IS 9760 - Ring Type




Both made of steel or impact resistant polymer or combination of both meeting

requirement of an energy absorbing system


18.18 Gas leak detection system for CNG fuelled engines √

18.19 Fire detection system √

18.20 Fire suppression system √


19.1 Windows

a Type of window Large tinted window panes for ACX bus

b Minimum height of window aperture (clear vision) in

mm ≥ 700 mm in type I -ACX

c Minimum height of upper edge of window aperture

from bus floor in mm As per AIS 052

d Minimum width of windows (clear vision zone) in

mm As per AIS 052

19.2 Cabin luggage carrier (CLC) As per AIS 052

a Positioning of CLC :

i Width from side wall in mm 250

ii Height from roof in mm 200

b Design & material "ABS (acrylonitrile butadiene styrene) ASTM-BS368/better or similar to that in

Passenger aero planes

c Additional provisions at the underside of CLC:- √






i Individual seat reading light At the discretion of purchaser. Bus should be enabled

ii Individually adjustable air conditioning knob At the discretion of purchaser. Bus should be enabled

iii Call button At the discretion of purchaser. Bus should be enabled

19.3 Passenger entertainment and other miscellaneous

items

a Touch screen setting type TV for individual seats At the discretion of purchaser. Bus should be enabled

b Audio ports at arm rest for TV and piped music At the discretion of purchaser. Bus should be enabled

c Head phone (replaceable loose item on demand) At the discretion of purchaser. Bus should be enabled

d Folding table for each seat √

e Magazine pouch √

f Adjustable foot rest At the discretion of purchaser. Bus should be enabled

g Back rest adjustment knob in case of reclining seats √

h Power ports on each seat to facilitate use of laptop,

MP3 player, USB etc √

i Cluster of mobile phone charging points √

20 Air conditioning system - operational conditions/other

requirements etc.

20.1 Specifications a) For up to 42°C of saloon temperature and b) For > 42°C of saloon temperature

20.2 Target results a) 23±1°C (for all temperature ranges)

b) Minimum average air velocity at air vent is 4.5 m/s


20.4 Procedure

1. Soak for 1 hour

2. At 2000 rpm

3.Upto 42°C: pull down time 30 minutes (maximum) (for more than 42°C of saloon

temperature, pull down time within 40 minutes (maximum))







20.5


heat and or cool air when doors are frequently opened

for boarding/alighting of Passenger with minimum air

flow of 1000±50 m³/hr at each gate

Optional

20.6 Individual seat air flow adjustment system Required

20.7 Air conditioning system in driver work place As in saloon

21 Noise, vibration and harshness (NVH) levels (interior)

21.1

Maximum noise levels inside the saloon (irrespective

of AC, non-AC/fuel type/engine location)-test

procedure as per AIS020

≤ 75 Db(A) (to be achieved a maximum noise level of 72 Db(A) from 1st April 2015

onwards)

21.2 Vibration levels

a Vibration levels at driver/Passenger seats m/s² ≤ 0.5

b Vibration level in gangway (m/s²) ≤ 1

21.3

Harshness levels when measured under city driving

conditions on city roads with pot holes and speed

breakers, etc

a Noise level in saloon from drive axle, etc Nil

b Dominant frequencies to fall outside the ranges of 0.5-1 Hz, 5-7 Hz and 18-20 Hz

c Transient vibration level in seating area maximum 1g

d Transient vibration level at driver seat maximum 0.1g

22 Life cycle requirements of bus (whichever is earlier) 15 years or 12,00,000 km

Chapter - 08

Specifications for Articulated BRT

bus for guidance

Specifications for Articulated BRT Bus


Bus specifications of articulated BRTS Bus (AC /Non -AC)


Bus characteristics Maximum floor height: 900 mm

Definition of Floor area Floor height shall be uniform inside the vehicle


2 Fuel-options Fuel to be compatible with propulsion system & prescribed emission norms

3 Engine



operations Geared maximum speed without speed limiter to be 75 kmph





f Rated HP/torque preferably at lower rpm range Maximum engine torque required at lower range of RPM and spread over a

wider range of RPM

g Power requirements for Air conditioning system,

ITS, etc Required






approximately 0⁰C to 50⁰C, humidity level from 5% to 100%, and altitude

levels of up to 2000 meters, generally operating in the semi arid zone/hilly

region prevailing in the area.

3.5 Engine location Front in the tractor module and rear in the trailer module of articulated bus

3.6 Transmission

Purchasers to select any one transmission system. a

Automatic with torque convertor. Neutral during

stops






b Automated manual


Transmission system to be fitted with a mechanism which makes it possible

to engage reverse gear only when vehicle is stationary (applicable for

automatic & automatic manual transmission)


5.1 Rear axle Heavy duty rigid axle

5.2 Front axle Heavy duty reverse Elliot type axle suitable the floor height of the bus

5.3 Rear middle axle – the drive axle Single reduction, hypoid gears, full floating axle shafts with optimal gear

ratios suitable for urban operations


7 Suspension system Pneumatic

7.1 Front Air bellows - 2 numbers.

7.2 Rear Air bellows - 4 numbers.

7.3 Rear middle axle - the drive axle Air bellows - 4 numbers.

7.4 Applicable for bi-articulated


7.6 Kneeling (mm) Minimum 60mm entry/exit side severally & collectively in mixed traffic on

direct routes

7.7 Anti roll bars/stabilizers Rear middle, rear and Front

7.8 Shock absorbers Hydraulic double acting at all axles

7.9 Controls (optional) Electronically controlled air suspension or superior system

a Applicable for bi-articulated

b Applicable for bi-articulated

c Applicable for bi-articulated

d Applicable for bi-articulated






8 Braking system

Dual circuit full air brakes, with preferably disc type arrangement for front

and drum at rear brakes. Graduated hand controlled, spring actuated parking

brakes acting on rear wheels (any bus delivered after 1st April, 2015 will

mandatorily have disc brake in front)


8.2 Electronic controls Required


a Applicable for bi-articulated

b Applicable for bi-articulated

c Applicable for bi-articulated


9.1 Batteries

Low maintenance type lead acid batteries for 24 V system- performances as

per BIS 14257-1995 (latest). 2*12V of commensurate capacity. Maintenance

free batteries preferred.




10 Speed limiting device (optional) Electronic type duly approved/certified as per AIS – 018/2001 or latest,



12 Fuel tank Capable to enable bus operation ≥ 300 km between consecutive fillings




a Overall length (over body excluding bumper) in 18000 (Minus tolerance -500)






mm

b Overall width (sole bar/floor level- extreme points)

in mm 2600 (maximum)

c Overall height (unladen)-(at extreme point ) in mm 3800 (maximum)

d Wheel-base

i Tractor 6100 (-200 + 400 mm tolerance)

ii Trailer: rear middle axle to rear axle 7000 (-100 mm +200 mm as tolerance)

iii Applicable for bi-articulated


f Rear overhang of trailer As per CMVR


13.3 Floor height above ground (mm) Maximum 900 with tolerance ± 20


a Axle clearance (mm) Minimum.190 mm



c Minimum ground clearance (un-kneeled) at GVW Within the wheelbase not less than 240 mm.


a Angle of approach (unladen) Not less than 8.5⁰

b Angle of departure (unladen) Not less than 9.0⁰


13.6 Bus articulation system – for puller/pusher type

articulated bus

a Bus articulation system - general requirements Heavy-duty articulation system






Suitable for vehicles with higher axle loads

Simple and clearly defined connection surfaces

Problem-free fitting to front and rear vehicle segments

Nearly maintenance free

Robust with low sensitivity to dirt and soiling

Easy accessibility to sub systems for maintenance/replacement

Fitted with an electronic control system that detects the driving situation

Suitable mechanism for anti-jack - knife joint required

Controls driving performance and also conducts a system diagnosis for early

detection of any defects.

Interconnecting unit design to prevent separation of tractor & trailer units

even in an accident with another vehicle required

Fitting with an electronic control system that detect the driving situation,

identify faults and warns for a corrective action

b Turn table Robust design, suitable for puller/pusher type articulated bus; Suitable

mechanism to minimize honing of floor edges/prevent tripping hazard

c Horizontal articulation along longitudinal axis ± 50⁰ with 2⁰ tolerance

d Vertical articulation along transverse axis ± 10⁰ with 1⁰ tolerance

e Dampers

An integrated sensor mechanism enabling continuous monitoring of the

defined damper values.

The system to ensure a minimum damping, even on failure of the electronic

components.

2 - stage damping system may be considered as an optional system

f Bellows

The bellows completely enclosing the gangway is closed under the

articulation.

Material for the folding bellows - synthetic rubber coated polyester material






made up of three layers of synthetic rubber and two layers of polyester mats.

The material sewn together and the outside seams crimped with an

aluminium reinforcement profile to give the bellows structural stiffness.

An aluminium J shaped extrusion bent to follow the contour of the bus body

with a gap under the articulated joint may be riveted to the bus body end.

The folding bellow collar may be fixed into this J section with a seal and the

bellows be held to the bus body by tensioning the cable.

A typical bus bellows installation would have two bellows that are connected

to a centre hoop located in the centre of the articulation. This centre hoop

manufactured from an aluminium extrusion forms to provide seating for the

collar of the bellows and its seal. This hoop may be steered by a pantograph

steering system that position the centre hoop so that it halves both the

horizontal articulation angle (52° maximum) and the vertical articulation

angle (11⁰ maximum)

14 Bus gates/ Doors

14.1 Type of doors Double jack knife on near side (non- driver side) and on off side (driver side)


b Opening/Closing time in seconds per operation

(maximum) 4

c Positions of door controls On dashboard, as also Inside & outside of doors

d


doors closing and doors opening only when the bus

is stopped

Mandatory

14.2

Front service doors; refer A - figure 4 (near

side/non-driver side)- no station platform; steps

required at door

Required








c Door height 1900 (minimum)


e Number of gates 1

14.3 Tractor- entry/exit gate; refer B - figure 4 (near

side/non -driver side) location Door & steps optional - Purchaser/operator to decide

a Door aperture (without flaps) in mm 1200 (min)



d

Fixed partition between gates - full height Optional (Purchaser to decide)

Width of partition mm 400 (maximum)

Location of partition

Vertical centre line of tractor partition or door aperture (when no partition)

maximum 6500 mm and minimum 5600 from the front edge of bus

(purchaser/operator to specify preferred distance as per their BRT facility)

e Positioning doors with respect to partition. One on each side of the partition

f Distance between tractor and trailer entry/exit gate Centre line of partition of tractor or door aperture (when no partition) to

centre line of door aperture of trailer- 6500 mm

g Number of gates 2

14.4 Trailer (near side/non driver side)

14.4.1 Trailer: entry exit gates with doors; refer C - figure

4-ahead of rear axle (near side/non-driver side)

Option one door & steps optional - purchaser/operator to decide option one

or two or three









d

Fixed partition between gates- full height Optional (Purchaser to decide)

Width of partition in mm 400 mm maximum

Location of partition Centre line of partition of tractor to centre line of door aperture of trailer-

6500 mm

e Positioning doors with respect to partition One on each side of the partition



g Number of gates 2

14.4.2 Trailer: entry exit gates with doors; refer C - figure


Option two door & steps optional- purchaser/operator to decide option one

or two or three


b Clear door width (fully opened) in mm 1300 ± 50 maximum



e Positioning door aperture centre line Centre line of partition of tractor or door aperture (when no partition) to




g No of Gates 1

14.4.3 Trailer: entry exit gates with doors; Refer C - figure


Option three door & steps optional - purchaser/operator to decide option one

or two or three

a Door aperture mm 1200 mm


c Door height in mm 1900 (min)







e Positioning door aperture centre line Centre Line of partition of tractor or door aperture (when no partition) to


f Distance between tractor and trailer entry/exit gate Centre Line of partition of tractor or door aperture (when no partition) to


g Number of gates 1

14.5 Tractor- entry/exit doors; refer E - figure 4- for (off

side/driver side)- station platform at the same level Required




d

Fixed partition between gates- full height Optional (Purchaser to decide)

Width of partition in mm 400 (maximum)

Location of partition

Vertical centre line of partition max 6500 mm and min 5600 from the front

edge of bus (purchaser/operator to specify preferred distance as per their

BRT facility)

e Positioning doors with respect to partition One on each side of the partition



g Number of gates 2

14.6 Trailer (off side /driver side)

14.6.1

Trailer- entry exit gates with doors; refer D- figure

4 -ahead of rear axle (off side/driver side)- station

platform at same level

Option one (purchaser/operator to decide on option one or two)









d

Fixed partition between gates - full height Optional (Purchaser to decide)

Width of partition in mm 400 (maximum)

Location of partition Centre line of partition of tractor or door aperture (when no partition) to


e Positioning doors with respect to partition. One on each side of the partition



g Number of gates 2

14.6.2

Trailer- entry exit gates with doors; refer D- figure

4 -ahead of rear axle (off Side/driver side)- station

platform at same level

Option two (purchaser/operator to decide on option one or two)


b Clear door width (fully opened) in mm 1300 ± 50 maximum



e Positioning door aperture centre line Centre line of partition of tractor or door aperture (when no partition) to




g Number of gates 1




14.9.1 Applicable for bi-articulated












14.13 Maximum first step height (mm) from ground-




14.14 Maximum height (mm) of other steps; if required 250

14.15 Ramp for wheel chair at the gates Suitable design mechanism for 900 mm floor ht considering that floor level


a Dimensions in mm Minimum width 900




when the length exceeds 1200 mm √


f Kneel ramp control: Kneeling arrangement for kneeling on left side severally and combined.

Kneeling up to 60mm


i Wheel chair anchoring- minimum for one wheel

chair √

ii Priority seats Minimum 4 seats









i Door closing requirements for bus movement Bus could move only after door closing completed

i

Power operated service door- construction &

control system of door to be such that a Passenger

is unlikely to be injured/trapped between the doors

while closing

As per AIS 052

iii Door components As per AIS 052



15 Bus body




specifications issues by purchaser. Other requirements as per bus body code.

Material should fulfil strength etc. requirements indicated under Annexure-3

15.3 Insulation


specifications issues by purchaser. Other requirements as per bus body code.

Material should fulfil strength etc. requirements indicated under Annexure-3 b Engine compartment


a Rub rail

Aluminium extrusion IS 733/1983 or better b Decorative moulding

c Wire cover






d Wearing strip

e Foot step edging

f Panel beading

g Window frame



a Not applicable for BRTS

b Type of floor Uniform flat floor

c Not applicable for BRTS




12mm thickness Phenolic resin bonded densified laminated compressed

wooden floor board (both side plain surface) having density of 1.2 gm/cc

conforming to IS 3513(Part-3): type VI 1989 or latest. The flooring should

also be boiling water resistant as for marine board BIS 710-1976/latest and

fire retardant as per BIS:5509-2000 (IS15061:2002)

g Anti – skid material 3mm thick anti-skid type silicon grains ISO 877/76 for colour, IS5509 for

fire retardancy


a Front windscreen (laminated) glass:

Single piece laminated safety glass, plain, flat/curved with curved corners

with PVB film IS 2553(Part-2)-1992/latest. Standard designs for each variant

of buses to be followed. (Refer Annexure 1)

Size: 2200mm width*1500mm height (minimum)*8.5±0.5mm thickness


Single piece flat/curved toughened glass-plain/flat/curved at centre & curved

at corners IS 2553 (Part-2)–1992/latest

Size: 1900mm width*950mm height (minimum)*5.5±0.5mm thickness






c Side windows Flat, 2-piece design-top fixed/sliding & bottom sliding toughened glass IS

2553 (Part-2)-1992/latest.



e Window & other glasses- material specs, thickness

etc Toughened as per IS 2553 (Part-2)–1992/latest of 4.8-5.3 mm thickness




15.7.1 Passenger seating’s As per AIS 052

a Seat layout 2x2

b Seat area/seat space per Passenger (width*depth)

mm 400*350

c Seat pitch- minimum (mm) As per AIS 052

d Bus capacity As per AIS 052

e

Minimum backrest ht-from floor to top of seat/

headrest As per AIS 052

Seat base height-distance from floor to horizontal

front upper surface of seat cushion mm. As per AIS 052

Seat back rest height (mm ) 375


g Seat materials ‘PPLD/LDPE’ moulded AIS 023 & AIS 052 for performance

h Seat frame structure material where required Frame structure of ERW steel tube








j Clearance space for seated Passenger facing

partition (mm) Minimum 350

k

Seat back/Pad material/thickness Polyurethane foam IS15061:2002 (padding is optional)

Type MDI Moulded IS 5509

Upholstery Pile Fabric/Jekard 0.7-1mm thickness

l Area for standee passengers (sq. mm.): As per AIS 052

m Number of seats including one for wheel chair Same as bus capacity above

n Number of standees Same as bus capacity above

o Sitting/standing Ratio Not required

p Headrest Not required

q Seats side facing location Not suggested except on wheel arches

r Seat arm Not required

s Magazine pouch Not required

t Individual seat row fans Not required

u Reading lights Not required

v Seat back rest Fixed

w Seat belts & their anchorage Not necessary except diver seat & wheel chair (performance etc. as per AIS

052)

x Performance & strength requirements of: √

i Driver seat AIS 023


15.7.2 Gangway:

a Minimum interior head room (centre line of

gangway) in mm 1900 including that in the rear overhang area.









b Gangway width (mm) from gates to longitudinal

space between seats (access to service doors)

(Ref Figure-1) Minimum 700 mm excluding armrests (armrests are not

required) and including stanchions- will be measured from seat edge to seat

edge.

c Gangway width (mm) in longitudinal space

between seats As above

d


between seats (rear of rear edge of the rear door in

RE bus)

As above




assembled structure, panels etc,

a







b Primer coating

c Painting:

16 Electrical system

BIS marked, copper conductors with fire retardant as per IS/ISO: 6722:2006

as per appropriate class. Conductor cross-section varying as per circuit

requirements, minimum cross-section 0.5 sq mm. Quality marking may also

be as per equivalent or better European, Japanese, US standards







As per AIS 052



a Fuse


value of voltage exceeds 100 volts



related to electric equipments/wiring



Electrically operated with two wiper arms & blades, wiper motor heavy duty

steel body with minimum 2-Speed operation wiping system as per CMVR/

BIS 7827 Part-1, 2, 3 (Sec.1 & 2)/latest. As per AIS 011

a Wiper motor: Variable speed with time delay relay as per AIS11.

b Wiper arm/blade: As per AIS 019/AIS011

16.5 Driver cabin fan 1 number, 200 mm fan As per provision of CMVR, matching interiors

16.6 Lighting - Internal & external and illumination As per AIS 052



b Cabin lighting - luminous flux of all lamps for

cabin lighting As per AIS 052 with illumination level of ≥ 100 lux & ≤ 200 lux

c Passenger area lighting -luminous flux of all lamps

for Passenger area lighting As per AIS 052 with illumination level of ≥ 100 lux and ≤ 150 lux








18.1 Driver seat belt & anchorage duly type approved. ELR recoil type, 3 point mounting as per CMVR & AIS 052 conforming to

AIS 005 & 015


Not necessary except diver seat & wheel chair (performance etc. as per AIS

052) Number:

18.3 Driver/Passenger/wheelchair seat belt anchorage


18.5 First aid box: 1 number, As per provision of CMVR

18.6 Handrails minimum length*diameter*height above

floor: mm

Colour contrasting and slip resistant of aluminium tubing 32 mm dia, 3 mm

thick. Rest as per AIS 052

18.7 Handholds: Colour contrasting and slip resistant. 2 to 4 Nos. hand holds per bay. Rest as

per AIS 052

18.8 Stanchions:

Vertically fitted, aluminium tubing with Colour contrasting and slip

resistant. 40 mm diameter & 3.15 mm thick. Rest as per AIS 052. As an

alternative to stanchions mounted on bus floor, stanchions mounted on top of

seat frames (new version seats) be explored (ref figure-2).



High visibility bell pushes/pully chord/touch tape shall be fitted at a height

of 1.2 meter on all alternate stanchions mainly for persons with disabilities.

(optional)


a In all school buses - minimum numbers. Not Applicable

b In all other buses - minimum numbers. As per AIS 052

c In AC super deluxe buses As per AIS 052

d Other details:






i First guard rail at a height from window sill mm

ii The distance between two guard rails mm

18.12 Entrance/Exit Guard/Step well guard: 800 mm minimum height extending ≥ 100 mm more than centre line of





18.16 Towing device front/rear Heavy duty 1.2 times (minimum) the kerb weight of the bus with 30

o of the

longitudinal axis of the bus. As per CMVR & IS 9760- Ring Type



18.19 Bumpers- front and rear

Both made of Steel or impact resistant polymer or combination of both


Impact strength for bumpers Meet requirement of Para 6.3.1 of AIS 052


19.1 Windows

a Type of window Sliding type window panes except ACX bus

b Minimum height of window aperture (clear vision)1 ≥ 950 mm in type I -NDX & SDX

c Min height of upper edge of window aperture from



19.2 Cabin luggage carrier Not required

19.3 Life cycle requirements of bus 12 years or 10,00,000 km







20 Air conditioning system- test procedure for type

approval


temperature

20.2 Target results

a) 24± 4°C (up to 42°C)

b) Temperature gradient of 15° ( > 42°C of saloon temperature) eg. If the

saloon temperature is 45o, then the target temperature inside the bus is 45

o-

15o= 30

o



20.4 Procedure

1. Soak for 1 hour

2. At 2000 rpm

3.Upto 42°C: pull down time 30 minutes (maximum) (for more than 42°C

of saloon temperature, pull down time within 40 minutes (maximum))


20.5


heat and or cool air when doors are frequently

opened for boarding/alighting of Passenger with

min air flow of 1000±50 m³/hr at each gate. Type of

air curtains at entry exit gates their power

consumption etc be accounted for while deciding

engine power, etc

Required














21.2

Maximum noise levels inside the saloon

(irrespective of AC, non-AC/fuel type/engine

location)- test procedure as per AIS020

84 dba (to be achieved a max noise level of 81 dba from 1st April 2015

onwards)

22 Fuel efficiency requirement While tendering, purchaser/operator may take into account the higher

weightage for more fuel efficient vehicle under standard test conditions

Chapter - 09

Specifications for Bi-articulated BRT

bus for guidance

Specifications for Bi-Articulated BRT Bus for Guidance


Bus specifications for Bi-articulated BRTS Bus (AC/Non -AC) for Guidance



Bus floor height Floor height shall be uniform inside the vehicle


2 Fuel-options Fuel to be compatible with propulsion system & prescribed

emission norms

3 Engine







f Rated HP/torque preferably at lower rpm range Maximum engine torque required at lower range of RPM and

spread over a wider range of RPM


3.3 Engine management Engine oil pressure, engine coolant temperature, engine speed in

RPM, vehicle speed, diagnostic details message (engine specific)


Engine should be able to operate efficiently at ambient

temperatures of approximately 0⁰C to 50⁰C, humidity level from

5% to 100%, and altitude levels of up to 2000 meters, generally

operating in the semi arid zone/hilly region prevailing in the area

3.5 Engine location Front in tractor/rear of the second trailer module of bi-articulated

bus

3.6 Transmission

Purchasers to select any one transmission system. a Automatic with torque convertor. Neutral during stops

b Automated manual







Transmission system to be fitted with a mechanism which makes

it possible to engage reverse gear only when vehicle is stationary



5.1 Applicable for articulated



5.4.1 Rear axles of front engine Bi-articulated bus in:

a Rear axle of tractor – the drive axle Single reduction, hypoid gears, full floating axle shafts with


b Trailer 1 (non drive axle) Heavy duty rigid axle

c Trailer 2 (non drive axle) Heavy duty rigid axle

5.4.2 Rear axles of rear engine Bi-articulated bus in:

a Trailer 1 - non drive axle Heavy duty rigid axle

b Trailer 2 - the drive axle - rear axle Single reduction, hypoid gears, full floating axle shafts with


c Tractor - non drive rear axle Heavy duty rigid axle


7 Suspension system Fully Pneumatic complete with ECAS/Electronic management

and control systems

7.1 Front Air bellows-2 numbers.


7.3 Rear axle of tractor Air bellows-4 numbers

7.4 Trailer 1 Air bellows-4 numbers

7.5 Trailer 2 Air bellows-4 numbers






7.6 Kneeling (mm) Minimum 60 mm entry/exit side severally & collectively in

mixed traffic on direct routes

7.7 Anti roll bars/stabilizers1 Rear axle of tractor, trailer 1 and trailer 2; and Front axle

7.8 Shock absorbers Hydraulic double acting at all axles

7.9 Electronic controls of suspension system for: Electronically controlled air suspension or superior system

a

Controlling floor level √ √

Levelling control for manoeuvring ≤ 80mm ≤ 80mm

b Enhancing comfort by absorbing shocks in case of road

irregularities √ √

c Uniform spring rate in all loading conditions √ √

d Self correction of bellow height to:

√ √

i Help protect driveline angularity related problems

ii Counter road unevenness

iii Monitor bellow failures

iv Provide passenger comfort

8 Braking System

Dual circuit full air brakes, with preferably disc type

arrangement for front and drum at rear brakes. Graduated hand

controlled, spring actuated parking brakes acting on rear wheels

(any bus delivered after 1st April, 2015 will mandatorily have

disc brake in front)


8.2 Electronic controls Required







8.3 Electronic monitoring of brakes: continuous monitoring of √ √

a Brake pad condition √ √

b Brake pad temperature condition √ √

c Door- brake inter locking √ √


9.1 Batteries

Low maintenance type lead acid batteries for 24 V system-

performances as per BIS 14257-1995 (latest). 2*12V of

commensurate capacity. Maintenance free batteries preferred.




10 Speed limiting device (optional) Electronic type duly approved/certified as per AIS – 018/2001 or

latest, tamper proof and be adjusted to applicable speed limit


12 Fuel tank

Capable to enable bus operation ≥ 300 km between consecutive

fillings




a Overall length (over body excluding bumper) 25000 (-500 mm tolerance)


c Overall height (unladen)-(At extreme point) 3800 (maximum)

d Wheel-base






i Tractor - between centre line of front axle to centre line of its rear

axle 5900 (-100 mm tolerance)

ii Trailer 1: centre line of rear axle of tractor to centre line of axle of

trailer 1 5900 (-100 mm tolerance)

iii Trailer 2: centre line of axle of trailer 1 to centre line of axle of

trailer 2 7600 (-100+200 mm as tolerance)


f Rear overhang of trailer 2 As per CMVR


13.3 Floor height above ground (mm) Maximum 900 with tolerance ± 20


a Axle clearance (mm) Minimum 190 mm

b Wheel area clearance (mm) > 220 mm for parts fixed to bus body & > 170 mm for the parts

moving vertically with axle

c Minimum ground clearance (un-kneeled) at GVW Within the wheelbase not less than 240mm


a Angle of approach (unladen) Not less than 8.5⁰

b Angle of departure (unladen) Not less than 9.0⁰

c Ramp over angle (half of break-over angle) Not less than 4.8⁰

13.6 Bus articulation system– for puller/pusher type bi-articulated bus

a Bus articulation system - general requirements

Heavy-duty articulation system

Suitable for vehicles with higher axle loads

Simple and clearly defined connection surfaces






Problem-free fitting to front and rear vehicle segments

Nearly maintenance free

Robust with low sensitivity to dirt and soiling

Easy accessibility to sub systems for maintenance/replacement

Fitted with an electronic control system that detects the driving

situation

Suitable Mechanism for anti-jack- knife joint required

Controls driving performance and also conducts a system

diagnosis for early detection of any defects.

Interconnecting unit design to prevent separation of tractor &

trailer units even in an accident with another vehicle required

Fitting with an electronic control system that detect the driving

situation, identify faults and warns for a corrective action

b Turn table

Robust design, suitable for puller/pusher type articulated bus;

Suitable mechanism to minimize honing of floor edges/prevent

tripping hazard

c Horizontal articulation along longitudinal axis ± 50⁰ with 2⁰ tolerance

d Vertical articulation along transverse axis ± 10⁰ with 1⁰ tolerance

e Dampers

An integrated sensor mechanism enabling continuous monitoring

of the defined damper values.

The system to ensure a minimum damping, even on failure of the

electronic components.

2- stage damping system may be considered as an optional

system

f Bellows

The bellows completely enclosing the gangway is closed under

the articulation.

Material for the folding bellows- synthetic rubber coated






polyester material made up of three layers of synthetic rubber and

two layers of polyester mats. The material sewn together and the

outside seams crimped with an aluminium reinforcement profile

to give the bellows structural stiffness.

An aluminium J shaped extrusion bent to follow the contour of

the bus body with a gap under the articulated joint may be riveted

to the bus body end. The folding bellow collar may be fixed into

this J section with a seal and the bellows be held to the bus body

by tensioning the cable.

A typical bus bellows installation would have two bellows that

are connected to a centre hoop located in the centre of the

articulation. This centre hoop manufactured from an aluminium

extrusion forms to provide seating for the collar of the bellows

and its seal. This hoop may be steered by a pantograph steering

system that position the centre hoop so that it halves both the

horizontal articulation angle (52°maximum) and the vertical

articulation angle(11° maximum.)

14 Bus Gates/ Doors

14.1 Type of doors Double jack knife on near side (non- driver side) and on off side

(driver side)


b Opening closing time in seconds per operation (maximum) 4

c Positions of door controls On dashboard, as also inside & outside of doors

d Passenger safety system- allowing bus motion on doors closing Mandatory






14.2 Front service doors; refer A - figure 5- (near side/non-driver side)-

no station platform; steps required at door Required





e Number of gates 1



14.4.1 Applicable for articulated







14.7 Tractor entry/exit gate; refer B- figure 5 -(near side doors/non-

driver side) location Door & steps optional- purchaser/operator to decide

a Door aperture (without flaps) in mm 1200 mm



d Fixed partition between gates - full height Optional (Purchaser to decide)








Vertical centre line of partition max 6500 mm and min 5600 from

the front edge of bus (purchaser/operator to specify preferred

distance as per their BRT facility)

g Positioning doors with respect to partition One on each side of the partition

h Distance between tractor and trailer 1 entry/exit gate Centre line of partition of tractor or door aperture (when no

partition) to centre line of door aperture of trailer 1- 6500 mm

i Number of gates 2

14.8 Trailer 1 entry exit gate with doors; refer C- figure 5 -ahead of

trailer 1 rear axle (near side/non-driver side): Door & steps optional - purchaser/operator to decide




d Number of gates 1

e Distance between trailer 1 and trailer 2 entry/exit gate Centre line of door aperture of trailer 1 to centre line of partition

or door aperture (when no partition) of trailer 2- 6500 mm

14.9 Trailer 2 (near side/non driver side)

14.9.1 Trailer 2 entry exit gate with doors ; refer D- figure 5 ahead of

trailer 2 rear axle (near side/non-driver side)

Option one door & steps optional - purchaser/operator to decide

option one or two




d Fixed Partition between gates- full height Optional (Purchaser to decide)


f Location of partition Centre line of door aperture of trailer 1 to centre line of partition








h Distance between trailer 1 and trailer 2 entry/exit gate Centre line of door aperture of trailer 1 to centre line of partition


i Number of gates 2

14.9.2 Trailer 2 entry exit gate with doors; refer D- figure 5 ahead of

trailer 2 rear axle (near side/non-driver side)

Option two door & steps optional- purchaser/operator to decide

option one or two


b Clear door width (fully opened) in mm 1300 ± 50 (maximum)



e Positioning door aperture centre line Centre Line of door aperture of trailer 1 to Centre Line of door

aperture of trailer 2- 6500 mm

f Distance between tractor and trailer entry/exit gate Centre Line of door aperture of trailer 1 to Centre Line of door


g Number of gates 1

14.10 Tractor- front near side doors; refer G -figure 5 - (off side/driver

side) location Required




d Fixed partition between gates- full height Optional (Purchaser to decide)


f Location of partition Vertical centre line of partition max 6500 mm and min 5600 from

the front edge of bus (purchaser/operator to specify preferred






distance as per their BRT facility)

g Positioning doors with respect to partition One on each side of the partition

h Distance between tractor and trailer 1 entry/exit gate Centre line of partition of tractor or door aperture (when no


i Number of gates 2

14.11

Trailer 1- entry exit gate with doors; refer F- figure 5- ahead of

trailer 1 rear axle; (off Side/driver side)- station platform at same

level

Required




d Number of gates 1

e Distance between trailer 1 and trailer 2 entry/exit gate Centre line of partition of tractor or door aperture (when no


14.12 Trailer 2 (off side/driver side)

14.12.

1

Trailer 2 entry/exit gate with doors; refer E- figure 5 ahead of

trailer 2 rear axle (off side/driver side) Option one door & steps optional - purchaser/operator to decide



c Door height in mm 1900 mm (minimum)

d Fixed Partition between gates- full height Optional (Purchaser to decide)


f Location of partition Centre line of door aperture of trailer 1 to centre line of partition








h Distance between Trailer 1 and Trailer 2 Entry/Exit Gate Centre line of door aperture of trailer 1 to centre line of partition


i Number of Gates 2

14.12.2 Trailer 2 entry/exit gate with doors; refer E- figure 5 ahead of

trailer 2 rear axle (off side/driver side) Option two door & steps optional - purchaser/operator to decide


b Clear door width (fully opened ) in mm 1300 ± 50 (maximum)



e Positioning door aperture centre line Centre Line of door aperture of trailer 1 to Centre Line of door


f Distance between tractor and trailer entry/exit gate Centre Line of door aperture of trailer 1 to Centre Line of door


g Number of gates 1

14.13 Maximum first step height (mm) from ground- unladen & un-

kneeled position in buses with:



14.14 Maximum height (mm) of other steps; if required 250

14.15 Ramp for wheel chair at the gates Suitable design mechanism considering that floor level of bus

stops are at 400mm

a Dimensions Minimum width is 900 mm








d Device to prevent the wheel chair roll off the sides when the length

exceeds 1200 mm √


f Kneel ramp control Kneeling arrangement for Kneeling on left side severally and

combined. Kneeling up to 60mm


i Wheel chair anchoring- minimum for one wheel chair √

ii Priority seats Minimum 4 seats



Dimensions (mm) As per AIS 052

i Passenger safety system - allowing bus motion on doors closing

and doors opening only when the bus is stopped Mandatory

i

Power operated service door- construction & control system of

door to be such that a Passenger is unlikely to be injured/trapped

between the doors while closing

As per AIS 052




15 Bus body


15.2 Bus structure- materials specifications etc Material to be decided by the manufacturer OR as per the tender






specifications issues by purchaser. Other requirements as per bus

body code. Material should fulfil strength etc. requirements

indicated under Annexure-3

15.3 Insulation


specifications issues by purchaser. Other requirements as per bus

body code. Material should fulfil strength etc. requirements

indicated under Annexure-3 b Engine compartment


a Rub rail



c Wire cover

d Wearing Strip

e Foot step edging

f Panel beading

g Window frame



a Type of floor N/A

b Type of floor Uniform flat floor

c Steps on floor N/A


e Maximum floor slope 6% (As per AIS 052)

f Floor surface material 12 mm thickness phenolic resin bonded densified laminated

compressed wooden floor board (both side plain surface) having






density of 1.2 gm/cc conforming to IS 3513(part-3): type VI 1989

or latest. The flooring should also be boiling water resistant as for

marine board BIS 710-1976/latest and fire retardant as per BIS

5509-2000 (IS 15061:2002)

g Anti– skid material 3 mm thick anti-skid type silicon grains ISO 877/76 for colour,

IS5509 for fire retardancy


a

Front windscreen (laminated) glass

Single piece laminated safety glass, plain, flat, curved with

curved corners with PVB film IS 2553 (Part-2)-1992/latest.

Standard designs for each variant of buses to be followed. (Refer

Annexure 1)

Size 2200mm width*1500mm height (minimum)*8.5±0.5mm

thickness


Single piece flat/curved toughened glass-plain/flat/curved at

centre & curved at corners IS 2553 (part-2)–1992/latest

Size 1900mm width*950mm height (minimum)*5.5±0.5mm thickness

c Side windows Flat, 2-piece design-top fixed/sliding & bottom sliding toughened

glass IS 2553 (Part-2)-1992/latest

d Glass specifications Toughened glass IS 2553 (Part-2)-1992/ latest

Glass thickness 4.8-5.3 mm

e Window & other glasses- material specifications, thickness etc Toughened as per IS 2553 (Part-2)–1992/latest of 4.8-5.3 mm

thickness




15.7.1 Passenger seating’s As per AIS 052






a Seat layout 2x2

b Seat area/seat space per Passenger (width*depth) mm 400*350

c Seat pitch- minimum in mm As per AIS 052

d Bus capacity As per AIS 052

e

Minimum back rest height-from floor to top of seat/headrest As per AIS 052

Seat base height-distance from floor to horizontal front upper

surface of seat cushion mm. As per AIS 052

Seat back rest height in mm 375

f Torso angle Minimum 12⁰

g Seat materials ‘PPLD/LDPE’ moulded AIS 023 & AIS 052 for performance

h Seat frame structure material where required Frame structure of ERW steel tube



j Clearance space for seated Passenger facing partition mm Minimum 350

k

Seat back/Pad material/thickness Polyurethane foam IS 15061:2002 (padding is optional)

Type MDI moulded IS 5509

Upholstery Pile fabric/Jekard 0.7-1 mm thickness

l Area for standee passengers (sq. mm) As per AIS 052

m Number of seats including one for wheel chair Same as bus capacity above

n Number of standees Same as bus capacity above

o Sitting/Standing ratio Not required

p Headrest Not required

q Seats side facing location Not suggested except on wheel arches






r Seat arm Not required

s Magazine pouch Not required

t Individual seat row fans Not required

u Reading lights Not required

v Seat back rest Fixed

w Seat belts & their anchorage Not necessary except diver seat & wheel chair (performance etc.

as per AIS 052)

x Performance & strength requirements of: √

i Driver seat AIS 023


15.7.2 Gangway:

a Minimum interior head room (centre line of gangway) in mm 1900 including that in the rear over hang area

i At front axle As per AIS 052

ii At rear axle As per AIS 052


b Gangway width (mm) from gates to longitudinal space between

seats (access to service doors)

(Refer figure-1) minimum 700 mm excluding armrests (armrests

are not required) and including stanchions- will be measured

from seat edge to seat edge.


d Gangway width (mm) in longitudinal space between seats (rear of

rear edge of the rear door in rear engine bus) As above








15.8 Corrosion prevention & painting Corrosion prevention treatment/painting for structural

members/components, assembled structure, panels etc,

a







b Primer coating

c Painting

16 Electrical system

BIS marked, copper conductors with fire retardant as per IS/ISO

6722:2006 as per appropriate class. Conductor cross-section

varying as per circuit requirements, minimum cross-section 0.5

sq mm. Quality marking may also be as per equivalent or better


16.1 Electrical cables

As per AIS 052



a Fuse

b Isolation switches for electrical circuits where RMS value of

voltage exceeds 100 volts


d Type approval of circuit diagram as per standards related to electric

equipments/wiring

e Battery cut- off switch (isolator switch)






16.4 Wind screen wiper

Electrically operated with two wiper arms & blades, wiper motor

heavy duty steel body with minimum 2-Speed operation Wiping

system as per CMVR/BIS 7827 Part-1, 2, 3 (Sec.1 & 2)/latest. As

per AIS 011

a Wiper motor Variable speed with time delay relay as per AIS11.

b Wiper arm/blade As per AIS 019/AIS011

16.5 Driver cabin fan 1 no., 200mm fan As per provision of CMVR, matching interiors

16.6 Lighting- internal & external and illumination As per AIS 052


a Dash board tell tale lighting/control lighting as per AIS 052 & bulbs tested for Photometry as per IS

1606:1996

b Cabin lighting- luminous flux of all lamps for cabin lighting As per AIS 052 with illumination level of ≥ 100 lux & ≤ 200 lux

c Passenger area lighting- luminous flux of all lamps for Passenger

area lighting

As per AIS 052 with illumination level of ≥ 100 lux and ≤ 150

lux



18.1 Driver seat belt & anchorage duly type approved ELR recoil type, 3 point mounting as per CMVR & AIS 052

conforming to AIS 005 & 015.

18.2 Passengers seat belt

Not necessary except diver seat & wheel chair (performance etc.

as per AIS 052) Number

18.3 Driver/Passenger/Wheel chair seat belt anchorage

18.4 Fire extinguisher As per AIS 052

18.5 First aid box 1 Number, As per provision of CMVR






18.6 Hand rails minimum length*diameter*height above floor (mm) Colour contrasting and slip resistant of aluminium tubing 32 mm

dia, 3 mm thick. Rest as per AIS 052

18.7 Handholds Colour contrasting and slip resistant. 2 to 4 Numbers. Handholds

per bay. Rest as per AIS 052

18.8 Stanchions

Vertically fitted, aluminium tubing with colour contrasting and

slip resistant. 40 mm dia & 3.15 mm thick. Rest as per AIS 052.

As an alternative to stanchions mounted on bus floor, stanchions

mounted on top of seat frames (new version seats) be explored

(refer figure-2).



High visibility bell pushes/pully chord/touch tape shall be fitted

at a height of 1.2 meter on all alternate stanchions mainly for

persons with disabilities. (optional)


a In all school buses- minimum numbers Not applicable

b In all other buses- minimum numbers As per AIS 052


As per AIS 052 d Other details:

i First guard rail at a height from window sill mm

ii The distance between two guard rails mm

18.12 Entrance/Exit guard/Step well guard 800 mm minimum height extending ≥ 100 mm more than centre

line of sitting position of the Passenger.

18.13 Emergency exit doors, warning devices etc As per AIS 052/CMVR


18.15 Mirrors right/left side exterior/interior Convex as per AIS 001 & 002. Interior with double curvature

18.16 Towing device front/rear Heavy duty 1.2 times (minimum) the kerb weight of the bus with






30o of the longitudinal axis of the bus. As per CMVR & IS 9760 -

Ring Type


18.18 Fog Lighting As per AIS 052/CMVR

18.19 Bumpers- front and rear

Both made of steel or impact resistant polymer or combination of

both meeting requirement of an energy absorbing system

Impact strength for bumpers Meet requirement of Para 6.3.1 of AIS 052


19.1 Windows

a Type of window Sliding type window panes except ACX bus

b Minimum height of window aperture (clear vision)2 ≥ 950 mm in type I -NDX & SDX

c Min height of upper edge of window aperture from bus floor As per AIS 052


19.2 Cabin luggage carrier Not required

19.3 Life cycle requirements of bus 12 years or 10,00,000 km


20.1 Specifications a) For up to 42°C of saloon temperature and b) For > 42°C of

saloon temperature

20.2 Target results

a) 24+/- 4°C (up to 42°C)

b) Temperature gradient of 15° ( > 42°C of saloon temperature)

e.g. If the saloon temperature is 45o, then the target temperature

inside the bus is 45o-15

o= 30

o









20.4 Procedure

1. Soak for 1 hour

2. At 2000 rpm

3.Upto 42°C: pull down time 30 minutes (maximum) (for more

than 42°C of saloon temperature, pull down time within 40

minutes (maximum))

4. Thermocouple to be placed over place minimum 20 numbers.

at nose level

20.5

Air curtains on entry/exit gates to avoid loss/gain of heat and or

cool air when doors are frequently opened for boarding/alighting of

Passenger with min air flow of 1000±50 m³/hour at each gate. Type

of air curtains at entry exit gates their power consumption etc be

accounted for while deciding engine power, etc

Required



An air passage/duct/roof hatch to be provided in driver area at a

suitable location for proper inflow of air inside the driver cab





21.2 Maximum noise levels inside the saloon (irrespective of AC, non-

AC/fuel type/engine location)-test procedure as per AIS020

84 dba (to be achieved a max noise level of 81 dba from 1st April

2015 onwards)

22 Fuel efficiency requirement

While tendering purchaser/operator may take into account the

higher weightage for more fuel efficient vehicle under standard

test conditions

Chapter - 10

Specifications for Intelligent

Transport System (I.T.S.)

Specifications for Intelligent Transport System (I.T.S.)


Objectives:

1. Harness currently available technologies, with convergence and relevance for the period of the ‘Plan’ and beyond.

2. Provide a clear and perceptible upgrade over 2008 specifications incorporating the various feed back of the past implementation.

3. Enhance commuter experience and quality/ substance of visual displays

4. Make vehicle more driver friendly

5. Enhance vehicle and customer safety

6. Improve operating efficiency by reducing variable costs such as fuel, brakes and human resource

7. Increased usability ,reliability and life with value for money

8. Standardize, with minimum subjectivity, requirements and responsibilities of various stake holders namely OEMs,

purchasers/operators, equipment suppliers, certifying agencies like ARAI and CIRT

9. Empower purchasers/operators with adequate information and details for tendering

10. Serve as a guideline for purchaser/operator to design ITS based infrastructure at respective control centres and/or depots for

enhancing operating efficiencies

11. Define inputs from the bus for ‘bus shelter sign’ applications (via control centre)

12. Serve as a guideline for ‘agencies’ like BIS, ARAI, CIRT and ASRTU

9.0 Electrical system

9.4 Electrical wiring & controls – type

9.4.1 Usability/Functionality/Capability

a Control power supply to and monitor status (voltage, current, faults) of all external and internal fixtures like passenger/driver

compartment illumination, fans, buzzer, horn and ITS equipments. Power to ITS equipments will be available even when the engine is

not running. This will be provided by putting the “Ignition- ON” Switch followed by switch for ITS equipments



b It should have an inbuilt fault identification, diagnostic and recovery system for the above

c Receive data from various sensors to assist monitoring vehicle safety/performance features such as

i Fuel /oil - level/ pressure

ii Braking pedal position

iii Accelerator pedal position and kick down

iv Brake pad condition and brake pedal temperature (in case of electronically controlled disc brakes)

v Door interlock

vi Kneeling interlock (wherever provided)

vii Gas leakage detection (wherever provided)

viii Fire detection/suppression (wherever provided)

d Diagnostic data from engine and transmission will be provided to VHMD, a minimum list of parameters mentioned is given as per

Annex 1 -clause 3,4,5 & 6

9.4.2 Architecture-multi 'Node'

a Each node with its own microprocessor (16 bit minimum)

b Memory (flash minimum 256kb, RAM minimum 64kb, EEPROM minimum128kb)

c Internal communication on CAN 2B

d Outputs suitable for

i Resistive loads, Coil loads, relay loads PWM

ii Current measurement, short circuit detection, open load detection and over Current Protection.

iii Digital high side

iv Digital low side

e Inputs



(1) Analog

(2) Digital high/low side

(3) for frequency/pulse counting

(4) For signal amplification

f Each node to be IP54 certified and to comply with test standards under Annex 2

9.4.3 Primary source of data input to 'SCU' for 'VHMD' via CAN 2B(J1939)

a As required under clause 17.5 and Annex1.

b All ‘CAN’ parameters will be input to SCU in standard format "standardized message name, PGN, SPN and rate

17.0 ITS enabled bus - On Bus Intelligent Transport System –OBITS

17.1 Architecture

a The architecture defines the overall inter connectivity of the different sub system inside the vehicle, communication within the sub

systems and connectivity to the backend solution for the transmission of the real time vehicle information. It shall consists of following

sub systems

i Passenger information system (PIS)

ii Automatic vehicle location system (AVL)

iii Security camera network system (SCN)

iv Vehicle health monitoring and diagnostics (VHMD)

v On-board pole mounted ticketing machines



b The single control unit ‘SCU’, together with single bus driver console ‘BDC’, form the nucleus of the on- bus vehicle intelligent

transport system (OBITS)

17.2 PIS System


a All drivers related interfaces (input/output/feedback) for PIS must be provided on SCU & BDC

i The route programming file to be uploaded on SCU

ii Route selection function is to be provided on BDC

iii All driver related route information to be displayed on BDC

b Amber colored, alphanumeric with graphic capability

c In-built light sensor with continuously variable brightness control to enable the display intensity to change based on ambient light

conditions

d Viewing distance

i Front, side and rear signs 50 meters minimum, for single line text, in day and night.

ii Inner 15 meters minimum, for single line text in day and night.

e Display Characteristics

i Fixed, scrolling and flashing mode (with fixed route number, upto 6 characters, on front, side and rear signs).

ii Capability to show customized graphics.

iii Two lines English /one line local language.

iv Total display height should accommodate two lines in English language and the Individual heights of each line should be adjustable

to enable one line to be larger/smaller than the second line. However during next stop announcement only single line text is required

v It should be possible to display, concurrently, different messages on each of the signs (front, rear, side and inner).



vi It should be able to display special signs like signs for 'PWD enable bus', ‘ladies special’.

f Signs should have ability to retain the last message displayed in the memory of the sign even in the event of power failure and without

the message being reloaded from SCU. Test will be performed by disconnecting the SCU from the sign and power to the sign will be

switched ‘off’ and ‘on’ to see if the Last message is retained and displayed.

g Display and voice announcement in English and local languages using Microsoft fonts (or any other as specified in tender) via window

based software package (window 7 or latest at the time of inviting the tenders).

h The system should have a programming capability as under

i Minimum 75 routes UP and DOWN (150 numbers of destinations) on front, side and rear signs.

ii GPS triggered next stop display on Inner sign with synchronized voice announcement for minimum 75 stops on each route.

iii The inner sign should be able to display and announce upto three languages, one after the other in sequence. For example make

display and announcement in English, then Hindi to be followed by local language for benefit of the passengers. Display and

announcements should be possible "before arrival" of the bus at the bus stop, "on arrival" of the bus at bus stop and "after departure"

of the bus from the bus stop.

iv In event of GPS failure the above functionality should be possible through manual intervention on BDC.

v Display driver and conductor ID once in between the stops on Inner sign

vi Inner sign should be able to display text and customized graphics and announce upto pre-recorded messages by driver selecting 1~9

on BDC display panel of the controller.

vii Display customized graphics plus synchronized voice announcement – location based

viii Functionality of Display 'clock'-GPS based or ‘Default Messages’ on Inner sign

ix Emergency 'stop' request function- by pressing an emergency switch placed anywhere in the bus the inner sign should display 'stop'

message and buzzer located near the driver makes the sound alerting the driver to stop the bus.

i Two way communication with central control centre(CCC) via SCU



It should be possible to change/choose/select a 'route' remotely over the air from back office and provide current route information to

back office

It should be possible to transmit adhoc messages (English) from back office to internal sign.

Back office should be able to check, via SCU, the version of firmware loaded on the signs.

j Sign should be able to store 'diagnostic trouble codes' (DTC)’,'parameters identifiers (PID) as per Annex 3 and data should be retrievable

through SCU.

k To comply with test standards under Annex 2

17.2.2 Dimensions and technical specifications of destination signs

a Display size

i Front minimum 200x1800 mm –one

ii Rear and side: minimum 200x900 mm-one each

iii Inner : minimum100x800 mm –one

iv For Articulated buses 1 front, 2 inner, 2 side sign and one rear will be employed.

v For mini and midi buses one sign in front of size minimum 200X900 mm and one inner sign minimum100x800 mm

b Pitch

i Front- maximum. H 13.4 mm x V14.1 mm (maximum H10.5 mm x V 14.1mm for mini/midi buses)

ii Side and rear maximum. H10.5 mm x V 14.1mm

iii Inner 8 x 8 mm maximum.

c LED and display quality front, side and rear signs

i Amber colored LED, dominant wave length 591~595nm (color matched and bin graded).

ii UV resistant, diffused lens 4 mm (minimum) or ‘SMT PLCC2 standard package’



iii Wide viewing angle 120⁰ horizontal & 60⁰ Vertical

iv Ensure enhanced readability with full clarity on scrolls and long life usage by incorporating non multiplexed system (constant

current drive circuit) with typical LED Intensity 400~700 mCd at If =20 mA, alternatively multiplexed design (maximum 4:1) with

typical LED intensity 950~1150 mCd at 20 ma

d LED and display quality inner sign

i LED amber dot matrix viewing angle 45⁰ all around, intensity minimum 40 mCd, dominant wave length 590 ~595 nm

e Structure

i Front ,side and rear signs : light weight structure with toughened glass fixed with UV resistant adhesive in front

ii Inner sign: light weight structure with poly glass /acrylic/toughened glass.

iii Electronic devices used to be 'automotive grade' rated for temperature -25⁰C to +85⁰C (so as to meet tests specified in Annx 2) with

conformal coated PCB boards

iv Power to signs shall be supplied through bus multiplex wiring system

17.3 Automatic vehicle location (AVL) system

17.3.1 SCU will transmit raw GPS data ,of vehicle locations, in NMEA protocol , to back office control centre at user configurable frequency (

5 seconds or less),via 3G(GSM)/GPRS, for further processing and use ,including that for signs on bus stops ,BRTS and bus terminals.

17.4 Security camera network (SCN) system


a The Network surveillance system shall consist of



i High resolution cameras, two numbers to monitor bus interiors (doors, driver zone, ticketing zone etc.) and one reversing surveillance

camera. For midi/mini buses 1 ambient and 1reversing and for articulated buses 3 ambient and 1 reversing camera to be employed.

ii Capability of 48 hour recording of images in ‘CIF’ mode (no sound) for total of four cameras. The recording will be overwritten if

not down loaded after the memory is fully utilized.

iii Capability to transfer the recordings to control centre/depot through SCU via high speed WLAN network (with back haul), in

compressed format

iv Capability to transfer the recordings using SD-card (if provided-refer 17.4.2 a below), tagged to vehicle ID, which is physically

removed and transferred to a card reader attached to the depot server.SD card will be provided in a lockable compartment.

v Capability to transfer recording using USB

b Recording functionalities

i Continuous or schedule based recording

ii Event based recording triggered by SCU (VHMD).

iii Event based recording triggered by sensors connected to the ‘recorder’(if provided separately)

iv Disconnected camera detection

v Auto shut down delay after ignition switch off

vi Auto reset after power break

vii Built in clock

viii Emergency operation: when activated by a foot operated micro pedal switch, the recording will take place at a preselected resolution

and FPS.

c SCU should be able to display on BDC one or more cameras at the same time upto maximum 4.

d BDC to display only reversing camera picture when reverse gear is engaged.



17.4.2 Architecture

a ‘Recording functionality’ could be provided in a ‘separate box (recorder)’ or alternatively could be in-built into SCU in which case hard

disc will be used instead of SD card for storage. The choice will be of the equipment supplier

b Power supply to ‘recorder’ will be provided through the bus multiplexing system.

c Power supply (12V regulated) to camera will be provided from

i ‘Recorder’.

ii Through the bus multiplexing system when ‘recording functionality’ is provided in SCU

17.4.3 Specifications

a ‘Camera’ specifications

i Fixed lens 3.6 mm

ii Picture resolution upto 752 H x 582 V (PAL),

iii Resolution = 420 TV lines minimum,

iv Picture sensor =1/3" CCD or better,

v IR distance 10 meters minimum ,

vi Automatic backlight compensation

vii Ingress protection rating IP66 minimum

b ‘Recorder’ specifications

i 4 Channel minimum

ii Recording resolution PAL

(1) CIF (352X288 ) upto 25 fps maximum each of 4 channel



(2) D1 (704X576) upto 25 fps maximum -one channels only

(3) DI (704X576) upto 12 fps maximum each of 4 channels,

iii Stream standards: ISO 1449, video compression standard H.264.

iv 48 hour (for total 4 channels) recording of images and voice in CIF mode.

17.4.4 Alternate system

IP (internet protocol) digital camera using ‘network recording' is also permitted with equal or better specifications.

17.5 Vehicle health monitoring and diagnostics (VHMD)

17.5.1 ‘SCU’ will receive vehicle health diagnostic data from multiplexing nodes and PIS signs

a The data from multiplexing nodes, on a single CAN 2B(JI939) bus will include parameters from

i Vehicle electrical system powered through multiplexing nodes

ii Vehicle safety and performance features

iii Engine and transmission

The list of such parameters is as per Annex 1. All ‘CAN’ parameters will be receivable in standard format "standardized message name, PGN,

SPN and rate.

b The data from PIS signs will include parameters specified in Annex 3

17.5.2 ‘SCU’ should be able to create log files and communicate to control centre at end of the day via WLAN the data related to parameters in

Annex 1.The log files will be overwritten if not down loaded.

17.5.3 SCU should be able to communicate to control centre, in case any of the parameters listed in Annex 1, exceed a predefined value at any

time .Such warning will also pop up real time on BDC screen. The number of such prompts will be five (maximum) at any time.



17.5.4 SCU should be able to display following parameters on BDC for viewing by driver/workshop technician.

a Engine oil pressure, engine coolant temperature, engine speed in RPM, vehicle speed.

b Transmission output shaft speed, transmission input shaft speed, transmission current gear, transmission oil filter restriction switch,

transmission oil life remaining, transmission service indicator, transmission sump oil temperature, transmission oil level high / low,

hydraulic retarder oil temperature

c ‘Nodes’ output status-parameters to be pre agreed at the time of tender.

d Vehicle performance/safety features such as brake condition ,door Interlock ,Kneeling interlock (wherever specified), gas leakage

detection (wherever specified), fire detection and suppression (wherever specified).The responsibility of providing requisite sensors for

such parameters rests with the OEM.

e Any other engine, transmission diagnostic data –parameters to be pre agreed at the time of tender.

17.5.5 SCU should be able to communicate to control centre, in real time, a pre selected 5 parameters (out of those mentioned above in 17.5.4).

17.6 On board hand held ticketing machine with smart card


a As per MOUD letter k/14011/28/2009-metro (PT) dated 9th

may 2012.

b No compatibility required with SCU and OBITS

17.7 On board pole mounted smart card ticketing terminals


a Two numbers, one each at two gates system. Specifications as per as per MOUD letter k/14011/28/2009-metro (PT) dated 9th may 2012.

17.7.2 Architecture

a SCU should be able to provide route, GPS information in XML format over TCP socket to ticketing machine.



b Ticketing machine should be able to connect through Ethernet port to enable it send information via the gateway on SCU. All such

transmission between ticketing machine and depot/CCC has to be 'secured' at the origin. Purchaser/operator shall make necessary

arrangement for identifying ticketing equipment and the protocol to be interfaced.

17.8 SCU and BDC architecture


a Integrate and interface all features of

i Passenger information system (PIS)

ii Automatic vehicle location system (AVL)

iii Security camera network system (SCN)

iv Vehicle health monitoring and diagnostics (VHMD)

v On-board pole mounted ticketing machines

b Provide the driver/user interface/display on BDC as specified elsewhere in this document

c Display camera images on BDC as specified elsewhere in this document

d Control PIS functionality as specified elsewhere in the document

e Provide two-way voice and data link with control centre to communicate data and information as specified elsewhere in this document.

The link will be based on open public communications network services 3G (GSM) with downward compatibility with 2G

f Provide wireless LAN (WiFi) interface for wireless communications between the vehicle and depot network as specified elsewhere in

this document .This interface will not be available to passengers.

g Provide capability to upload firmware/ software and configuration of parameters on ‘SCU’ via the wireless LAN

h Provide audio interface to the driver’s microphone and earpiece or speaker using wired link to SCU (Telephone dial up is not envisaged)



i BDC ,on a selectable ‘menu’ will have ‘panic’ options’ for communicating pre configured messages to control centre

j Capability to store 'diagnostic trouble coded' (DTC)' ,'parameters identifiers (PID) as per Annex 3

k To comply with test standards under Annex 2

17.8.2 Technical specifications: SCU

a Processor : 32/ 64 bit

b Operating system: embedded Windows/Linux with programming software( Windows 7 or latest at the time of calling the tenders)

c Memory : flash: 2 GB minimum, RAM 512 MB minimum (RAM memory includes SCU and BDC)

d Interface : CAN 2.0, RS 485,RS 232, fast Ethernet, USB, digital outputs, digital/Analog inputs, WLAN, audio input output,, amplified

audio output

e Interface protocols :as specified elsewhere in this document

f In built GPS and 3G(GSM) modules

g WLAN

h Combi antenna using RG174 cable. The connectors on Combi antenna will be preferably SMA(M) ST plug type for GPS and FME(F)

jack type 1/4"-36UNS-2B for 3G

i In built /external two channel amplifier minimum 10 Watts rms each suitable for 4 ~8 Ohm impedance with input for external

microphone

j In-built MP3 files storage/playback function.

k Power to SCU & BDC will be supplied through bus multiplexing wiring system

17.8.3 Technical Specifications: BDC

a Display



i Size 5.7” diagonal minimum

ii Full color graphic TFT-640 x 480 dots minimum, capable of showing minimum 20 lines in English.

iii Viewing angle (horizontal) 60°/75° (right/left)/ (vertical) 60°/75° (up and down)

iv Adjustable back lighting

b Key board :4 keys minimum

17.8.4 Technical specifications: GPS modules

a Rating:22 tracking/66 acquisition minimum

b Tracking sensitivity :-165 dBm typ

c Navigation sensitivity ; -148 dBm typ

d Update rate I Hz (configurable to 10 Hz)

e Time to first fix cold acquisition 35 seconds typ

f Hot acquisition 1 second typ.

g Navigation accuracy 3M horizontal

17.8.5 Technical specifications: 3G(GSM) modules

a GSM/GPRS SMT quad band and UMTS (3G)

b Temperature range -40°C to +85°C

17.8.6 Technical specifications: ‘Combi’ Antenna

a AMPS 850MHz, GSM900MHz, ISM868MHz, DCS1800MHz, PCS1900MHz, 3G UMTS 2.1GHz, Wifi /Blue Tooth (2.4 GHz),GPS

(1575.42MHz). Separate WLAN antenna may be provided if necessary.

b GPRS



i Impedance 50 Ohm

ii Radiation pattern Omni-directional

iii Polarization linear (vertical)

c GPS

i Impedance 50 Ohms

ii VSWR <1.5:1

iii Polarization RHCP

d Waterproof IP-66

e Temperature range -40°C to +85°C

f RG174 cable

17.8.7 Fitment on bus

a All ‘OBITS’ equipment including wiring harness, antennas to be original factory fitment.

b Front, side, rear signs should be mounted with a gap with the glass so that the glass on signs and of the bus can be cleaned by swiping

c All equipment should be fitted in a way to minimize unintentional damage, shielded from direct engine heat, protected from water splash

and dust.

d All cables need to be properly anchored

e Others:

i Front sign: central

ii Rear sign: central

iii Side sign: first window ahead of rear door (central line of sign should coincide with central line of window)

iv Inner sign: centralize along the width of bus behind the driver's partition



v Speakers with protective grill : one each near the doors and others equally distributed across the length of the bus- Total no. 4

vi SCU, recorder, amplifier : secured and ventilated compartment right above the driver

vii BDC: ergonomically placed for driver ease

viii Camera: as specified else where

ix Ticketing machines - pole Mounted: as specified elsewhere

x Combi antenna: suitable place to define inside the bus (preferably) with direct line of view for 'affixing' the unit.

17.8.8 Communication amongst sub systems

a 'Signs' to 'SCU' RS 485

b 'Multiplexing nodes' to 'SCU' CAN 2B (J1939)

c 'Camera' to 'Recorder’ AVI or Ethernet (for ‘IP’ camera option )

d 'SCU to 'BDC' Ethernet/DVI/VGA/HDMI/RS232/RS485 as required.

e Add -on 'Ethernet switch' and CAN ports are permitted

17.8.9 Communication between SCU and depot/central control centre (CCC)

a AVL to CCC:

Raw GPS data in NMEA 0183 protocol (GPVTG, GPGGA, GPRMC, GPGSV and GPGSA) and route number via open public

communications network services 3G and download compatibility

b VHMD real time warning to CCC

Open public communications network services 3G and download compatibility

c VHMD end of the day to depot

IEEE 802.11 Wireless LAN (WiFi) via 'Back haul' at depot

d SCN 48 hour recording to depot



IEEE 802.11 Wireless LAN (WiFi) via 'Back haul' at depot plus SD card physical transfer/USB physical transfer

e Firmware download from Depot

IEEE 802.11 Wireless LAN (WiFi) via 'Back haul' at depot

f PIS Two way communication to depot need based, API to be pre-agreed

g Any protocol provided by ITS supplier will be under a 'NDA' amongst the parties

17.8.10Additional requirements of Purchaser/Operator

a If required, Purchaser/Operator can specify as a part of their tender requirements, unambiguously, any additional requirement in relation

to ‘interface’ with their ITS Infrastructure.

17.8.11TA' and 'COP' approvals

a The notified agencies, as under rule number 126 of CMVR, will be responsible for approvals and certification of 'OBITS' system as

defined above.

b Above approvals ,when accorded to sub system suppliers such as PIS ,SCU and BDC, etc will be valid across the board for various

purchaser/operator, OEMs and tenders

17.8.12 Warranties

a The standard warranty will be identical to the warranty of bus (up to 3 years maximum) however purchaser/operator may ask OEMs for

extended warranty /annual maintenance contract after expiry of standard warranty periods.

17.8.13 ITS Infrastructure at Purchaser/Operator

a Purchasers/Operator(s) are obligated to install the necessary ITS infrastructure and human resource to 'take over' the OBITS system from

OEMs and have their own cell for day to day operations and needs. Typical examples being: PIS route programming including voice

recordings ,maintaining up-to-date LAT LONG database, ‘Back Haul' operations.

b OEMs are obligated to provide training to such purchaser/operator(s) staff before delivery of buses.



c Driver Score Card/Driver rating: Purchasers/Operator(s) are obligated to make use of the information from OBITS to incorporate a

practice of ‘Driver Score Card’. A few suggested parameters are

I. Door Open while driving

II. Harsh Acceleration

III. Excessive Idling

IV. Harsh Braking

V. Over revving

VI. Over speeding

VII. Excessive Trip Mileage (Fuel Mileage)

VIII. Non Adherence to ‘Trip Schedule’ e.g. ‘Late Start’, ‘Off Route’ and ‘Duty Cycle’

IX. Driving with Faults: Warning Pop ups reported and initiative to get corrected

X. Panic Button usage

XI. Cameras switched off

XII. Internal Sign Switched off

Data from the above will be based on

VHMD Log files and SCN data downloaded at end of the day including Driver ID

Live AVL location transmitted from Bus.



Annexure 1: VHMD parameter list

All data will be provided by bus multiplexing node

1. Vehicle electrical system

All external and internal fixtures like passenger/driver compartment illumination and ITS equipment.

2. Vehicle safety and performance features

Fuel /Oil level/ Pressure

Braking pedal position

Accelerator pedal position and kick down

Brake pad condition and brake pedal temperature (in case of electronically controlled disc brakes)

Door interlock

Kneeling interlock (wherever provided)

Gas leakage detection (wherever provided)

Fire detection/suppression (wherever provided)

3. Engine

Engine CAN status

Engine oil pressure,

Engine coolant temperature,

Engine speed in RPM,

Vehicle speed (torque),

Diagnostic message (engine specific)



4. Transmission

Transmission CAN status

Transmission output shaft speed

Transmission input shaft speed

Transmission current gear

Transmission oil filter restriction switch

Transmission oil life remaining

Transmission service indicator

Transmission sump oil temperature

Transmission oil level high / low

Hydraulic retarder oil temperature

Accelerator pedal

Diagnostic message (transmission specific)

5. Diesel bus electronics data (list is indicative, to be finalized by respective purchasers/operators)

Drivers demand of engine torque percentage

Actual engine torque percentage

Engine and retarder torque

Engine speed



Source address controlling device

Engine starter mode

Engine demand torque percentage

Accelerator pedal 2 low Idle switch

Road speed limit status

Accelerator pedal kick down switch

Accelerator pedal low Idle Switch

Accelerator pedal position

Percent load at current speed

Remote accelerator pedal position

Accelerator pedal position 2

Vehicle acceleration rate limit status

Engine temperature

Engine coolant temperature

Fuel temperature

Engine oil temperature

Turbo oil temperature

Engine intercooler temperature

Engine intercooler thermostat opening

Engine fluid level pressure

Fuel delivery pressure



Extended crankcase blow by pressure

Engine oil level

Engine oil pressure

Crankcase pressure

Coolant pressure

Coolant level

6. CNG bus electronics data (list is indicative, to be finalized by respective purchaser/operators)

Engine control unit

Engine speed sensor

Atmospheric pressure sensor

Brake switch signal

EEPROM error

Vehicle speed sensor

Main relay main relay

Ignition switch

Fuel temperature sensor

Turbocharger boost pressure sensor

Boost pressure control

Accelerator pedal position sensor 1

Accelerator pedal position sensor 2



Analog/digital converter

Coolant temperature sensor

Fault lamp, engine control

Electric shutoff (ELAB)

Needle sensor

Secondary engine speed signal

engine speed sensor

Start-of-injection control

Injection timing solenoid valve

Voltage supply control units

Reference voltage

air temperature sensor

Control-collar travel sensor


Test after running test


Engine control unit

Misfire recognition



Annexure 2: Test Standard Compliance Document

These tests standard compliances are common to PIS signs/multiplexing nodes/controller/driver console

Sr. No Test standards compliance Specifications

1 Performance parametric test

Nine points, tri temperature/tri voltage- 18V, 27V, 32V,-25°C, room temperature,

+85°C test. At each test point the system will be powered on and shut down 5 times

as per the supplier’s designated procedure and thereafter evaluated for malfunction if

any

2 Cold IS 9000 (Part II/Sec 4)-1977 (reaffirmed 2004) at -25⁰C for 2 hours in ‘on’ condition

3 Dry heat IS 9000 (Part III/Sec 5)-1977: PIS Signs, SCU and Nodes at + 80⁰C for 16 hours in

‘on’ condition. BDC at + 80⁰C for 2 hours

4 Damp heat

IS 9000 (Part V/Sec 2)1981 at +25⁰C /+55⁰C, Humidity 95%, 24 hours for 6 cycles in

off condition. Functional test with power in ‘on’ condition at start of 2nd, 4th and 6th

cycle

5 Vibration standard AIS 012/AIS:062 -10g

Frequency 5~50Hz and return to 5Hz at a linear sweep period of 1

minute/complete sweep cycle and 10g at maximum frequency

Excursion -1.6 mm peak to peak over the specified frequency range

Test duration 60 minutes

Direction of vibration –X, Y, Z axis of device as it is mounted on the vehicle.

6 Dust and water ingress protection IS /IEC 60947-1:2004 in conjunction with IS/IEC 60529:2001– ‘PIS signs’ IP66,

‘SCU’ IP 65, ‘BDC’ IP65, ‘nodes’ IP54

7 Free fall IS 9000 (Part VII/Sec 4) Free fall at 500 mm ,(applicable to ‘nodes’ and ‘controllers’




only)

8 Fire resistant

Regulation directive 95-28/EG dated 24-10-1995 horizontal Burning rate tested as

per ISO 3795 ,

Horizontal burning test HB as per UL 94 -1998 clause 7 ( for wire harness)

9 Reverse polarity protection without fuse The component must fulfil the function- and service life requirements after being

subjected to reversed polarity up to 27 V for 2 minutes.

10 Over voltage protection To ensure service life requirements and functionality. The component shall run for 60

minutes at 38V, without effecting the service life or function.

11 Insulation resistance

The Insulation résistance measured as per ISO 16750-2 with a voltage of 500 V dc shall not be less than 1Mega ohm.

12 Cranking voltage

The components shall have an electrical energy reserve that can handle voltage drop

during cranking. Component shall not reset during cranking-‘FSC B’. The supply

voltage during crank is 18.0 V for 40 ms. The test to be carried out as per ISO 7637

13 Load dump test on controller 123V ,8 Ohms 200ms pulse 5a as per standard ISO 7637-2

14 Salt spray test (AIS: 012/ IS10250) 96 hours

15 EMC/EMI

1.Electromagnetic radiation, radiated immunity and compatibility as per AIS 004 (Part 3) or

2.72/245/EEC last amended by 2009/19/EC (includes 2004/104/EC, 2005/83/EC,

2006/96/EC) and UN ECE Regulation Number 10 Rev 3:2008




Note: In case of product is ‘e’ marked and a detailed test report is submitted (which

includes above tests) no fresh verification is necessary

16 Operating parameters Supply voltage 24 V± 25%

17

LED color test – dominant wave length

amber AIS -012

18

LED chromaticity coordinates

Limit towards green: y ≤ x-0.120

Limit towards red: y ≥ 0.390

Limit towards white: y ≥ 0.790-0.670x

In accordance with CIE 127 condition B

19 LED bulb/SMT intensity and viewing

angle In accordance with CIE 127 condition B



Annexure 3: Diagnostic trouble codes (DTC) and Parameter Identifiers (PID) list

Appendix 1 – DTC code list of PIS signs

DTC code Description

1 2 0 0 Over voltage

1 2 0 1 Low voltage

1 2 0 3 Over heat

Appendix 1.1 – PID code list of PIS signs

Example of PIDs code numbers for a LED sign. PIN code is Ascii characters.

PID code Description

100 Hardware revision

101 Serial number

102 Boot loader SW revision

103 Application SW revision

104 Font library revision

105 CPU part number




106 CPU qualification

107 CPU temperature range

108 Compilation of FW date and time

109 Flash update status

110 Test date and time

114 Article number sign level

115 Production date (production date)

116 End customer

117 Order number

118 Bus/vehicle type

119 Bus builder number (bus build)

208 Language

401 Board temp sensor

402 Internal CPU temp

600 Minimum temp CPU




601 Maximum temp CPU

602 Maximum temp board

603 Minimum temp board

604 Maximum input power voltage

605 Minimum input power voltage

606 Operating hours

607 Number of resets

Appendix 1.2 – DTC code list of controller

DTC code Comments

0 0 1 2 Watch dog reset

0 0 1 3 Low voltage reset

0 0 2 0 Lost communication, GPS satellite (GPS receiver is not available to the system.)

0 0 2 1 Invalid data, GPS signal invalid

0 0 2 2 GPS antenna error



0 0 2 5 USB, invalid USB mass storage device

0 0 2 6 USB, unknown USB device connected

0 0 2 7 USB, USB invalid file system

0 0 0 7 USB, overcurrent

0 2 0 0 Over voltage

0 2 0 1 Low voltage

0 2 0 3 Over heat

Appendix 1.3 – PID code list controller

Example of PIDs code numbers for control unit. PIN code is Ascii characters.


100 Hardware revision

.i101 Serial number

102 Boot loader SW revision

103 Application SW revision

104 Font library revision



105 CPU part number

106 CPU qualification

107 CPU temperature range

108 Compilation of FW date and time

110 Test date and time

Windshield Designs

Annexure - 1

Annexure – 01: Windshield Designs

Urban Bus Specifications – II, Ministry of Urban Development, Government of India

Figures

Annexure - 2

Annexure – 02: Figures


Figure - 01



Figure - 02



12 m BRT Standard Bus

(Refer guideline for how to select doors and width)



(Guidelines for how to select door location) 12 m BRT Standard Bus

Station Door Details

Bus Gates Details Platform Ht

Operation Option Options for Bus Gate Locations for

station position Description

900

Near Side Off Side

Front Middle Rear Middle

I BRTS with dedicated corridor only

with stations on either side

Near Side Gates A B C

N/A

Width of Door

Option 1 800 1200 (N/A) 1200 (N/A)

Option 2 1200 1500

Option 3 1200/1200 *

Steps Required Y/N If Y,

then no of Steps (No) Y (2) N N

Off Side Gates

N/A

D

Width Option 1 1200/1200 *

Steps Required Y/N N

II

BRTS with BRT corridor + extn in

Mixed Traffic (Off Side -Level

Boarding + Near Side - non-level

boarding)


N/A

Width of Door

Option 1 800 1200 (N/A) 1200

Option 2 1200 1500 (N/A)

Option 3 1200/1200 (N/A)

Steps Required Y/N If Y,

then no of Steps (No) Y (2) N Y (2)

Off Side Gates

N/A

D

Width Option 1200/1200 *

Steps Required Y/N N

Note: * There are two doors with partition as per specification



18 m BRT Articulated Bus




(Guidelines for how to select door location) 18 m BRT Articulated Bus



Operation Option

Options for Bus Gate

Locations for station

position

Description

900

Near Side Off Side

Front Tractor Trailer Tractor Trailer

I

BRTS with dedicated

corridor only with

stations on either side


N/A

Width of Door

Option 1 800 1200/1200 * 1200

Option 2 1200 1500

Option 3 800/800 *

Steps Required Y/N If Y, then no of Steps

(No) Y (2) N N

Off Side Gates

N/A

E D

Width of Door

Option 1 1200/1200 * 800/800 *

Option 2 1500

Steps Required Y/N N N

II

BRTS with BRT

corridor + extn in Mixed

Traffic (Off Side -Level

Boarding + Near Side -

non-level boarding)

Near Side Gates A BC D

N/A

Width Option

Option 1 800 1200/1200 (N/A) 1200

Option 2 1200 1500 (N/A)

Option 3

800/800

(N/A)

Steps Required Y/N Y (2) Y (2)

Off Side Gates

N/A

FG E

Option 1 1200/1200 * 800/800 *

Option 2 1500

Steps Required Y/N N N

Note: * There are two doors with partition as per specification



25 m BRT Bi-Articulated Bus




(Guidelines for how to select door location) 25 m BRT Bi- Articulated Bus



Operation Option

Options for Bus

Gate Locations for

station position

Description

900

Near Side Off Side

Front Tractor Trailer

1 Trailer 2 Tractor

Trailer

1

Trailer

2

I

Near Side Gates A B C D

N/A

Width of Door

Option 1 800 1200/1200 1200 800/800

Option 2 1200 1500

Steps Required Y/N If Y, then no of

Steps (No) Y (2) N N N

Off Side Gates

N/A

G F E

Width Option 1

Option 1 1200/1200 1200 800/800

Option 2 1500

Steps Required Y/N N N N

II

Near Side Gates A B C D

N/A

Width Option

Option 1 800 1200/1200 (N/A) 1200

Option 2 1200 1500 (N/A)

Option 3 800/800 (N/A)

Steps Required Y/N Y (2) N Y (2) N

Off Side Gates

N/A

G F E

Width Option 1

Option 1 1200/1200 1200 800/800

Option 2 1500

Steps Required Y/N N N N

Design Type Approval

Annexure - 3

Annexure -03-Design Type Approval


Material Strength Requirements


15 Bus body


a


structural aggregates be designed to fulfil the

loading, operating & performance parameters using

finite element analysis or any other analytic

technique for: Required

Strength

Stiffness


Vibration

Safety






thereof or to an alternate method approved by the

test agency

As per AIS 052


iii Deflection √

iv Vibrations √


vi

Joint strength- body panel joints meet requirements

of holding the joined panel when subjected to force

of 60% of tensile strength of weakest joined body

panel.

As per AIS 052





b Various loads:

i

Normal loads (static) = Number of

Passenger*weight of Passenger (68 Kgs.) +

Passenger luggage weight (7 Kgs). (Besides the

vehicle related loads).

√

ii



single wheel on bump/pot hole. # Case II:

diagonally opposite wheels on Bump/Pot hole. #

Case III: both wheels (front & rear) on bump/pot

hole.

√



c Bus body structure evaluation by a & or b As under






of yield stress



iv

Roll over tests with the bus rolling from ground

level instead of a raised platform. Angular velocity

should not exceed 5 degrees/second. All other

procedure as per AIS031 (i) Unstable position should not occur before 35⁰. ( ii) No part of structure intrudes

into residual space. 1. Bus tilted to its unstable position






position.


v





gravity, h= Height of C.G. above ground level in


0.75 ER


Test procedure for evaluation of AC system

performance

Annexure - 4

Annexure -04-Bus AC Test Procedure


1.0 Scope:-

This test procedure is applicable for testing the Air Conditioning system performance at hot ambient and very hot ambient condition on

intracity urban bus in a climatic hot chamber. This procedure does not cover durability aspects of Air conditioning system.

2.0 Test Conditions:-

2.1 The performance of bus air conditioning system is evaluated in the following operating conditions

2.2 Test shall be carried out in climatic hot chamber, on stationary bus in neutral (gear)

2.3 Test RPM: Average of two corresponding engine RPM correlated to vehicle speed of 40 KMPH for two successive gears recommended

by the manufacturer. Test RPM shall have a tolerance of + 50 RPM

2.4 AC Control Settings:-

a) Blower speed : Maximum speed

b) Temperature control : Maximum cooling

c) Air intake : Recirculation mode

d) Mode button : Cooling

2.5 Environment / Ambient condition:-

a) Ambient Temperature : 42±2°C (Hot ambient_Test Condition 1)

: 48±2°C (Very hot ambient_Test Condition 2)

b) RH : 40±5% for both test conditions.

2.6 Test Duration:-

a) Hot soaking time : 90 minutes.



b) Test duration after start of : 30 minutes (Hot ambient_Test Condition1)

engine and AC system 40 minutes (Very hot ambient_Test condition2)

3.0 Test Procedure:-

3.1 The bus under test shall be instrumented for the air conditioning performance evaluation (refer Annexure A for instrumentation inside

the bus).

3.2 After instrumentation is complete, the bus shall be parked inside the climatic hot chamber with the front end facing the wind simulation

fan. Engine and AC system is OFF.

3.3 If bus is equipped with a heating system, ensure the bus heating system is switched off during the trials. If bus is equipped with

automatic temperature control, then ensure ‘cooling’ mode is selected.

3.4 The climatic hot chamber shall be started.

3.5 The environment / ambient conditions to be set inside the hot chamber shall be as per Para 2.

3.6 Allow the hot chamber to attain temperature of 42±2°C (Test condition 1) / 48±2°C (Test condition 2).

3.7 When above chamber condition is reached doors of the bus shall be kept open. This indicates start of hot soaking of the bus.

3.8 Hot soak the bus for 90 minutes.

3.9 After hot soaking of 90 minutes the driver and two test engineers shall enter the bus and close the doors.

3.10 Initial temperature at nose level of all passenger seat locations shall be recorded before starting engine and AC system.

3.11 Engine shall be started and AC controls are to be set as described in Para 2.5. AC system is switched ON. This indicates start of the test

3.12 Wind simulation fan shall be started.



3.13 Nose level temperature at all passenger seat locations shall be recorded at 1 minute intervals for entire test duration (i.e. 30 minutes for

Test condition1 and 40 minutes for test condition 2)

3.14 Air velocity at vents provided above passenger seats shall be measured at the end of the test.

3.15 After the test is complete, the air velocity data recorded and the temperature data recorded shall be presented in a format shown in

Annexure B. Extract average passenger nose level temperature and average vent air velocity.

3.16 Average Passenger Nose Level Temperature (in °C) vs. Time (in minutes) graph shall be extracted from the test data.

3.17 From the above graph determine the average passenger nose temperature at 30th

minute (Test condition 1) / 40th

minute (Test condition

2)

4. 0 Acceptance criteria:

Bus AC system performance shall be considered acceptable if it complies as below:

4.1 Air velocity:-

The average air velocity measured at vents provided above passenger seats as described in Para 3.14 should be at least 4.5 m/s.

4.2 Average passenger nose level temperature:-

Hot ambient_Test condition 1:

The bus air conditioner should achieve average passenger nose level temperature of 24±4°C in 30 minutes

Very hot ambient_Test condition 2:

The bus air conditioner should achieve average passenger nose level temperature of 33°C in 40 minutes



Annexure A

Instrumentation Inside Bus – Sample Format

A

nn

ex

ure

7

Th

erm

oc

ou

ple

la

yo

ut

ins

ide

bu

s

To

tal m

ea

su

rem

en

t p

oin

ts -

21

EM

ER

G

DO

OR

DO

OR

1

2313

14

15

16 8

910

11

12

17

18

19

20

21

22

23

31

24

25

26

27

35

36

34

28

29

30

45

67

DO

OR

2

32

33

N1

N2

N3

N11

N10

N12

N21

Nose T

herm

ocouple

N4

N6

N8

N5

N7

N9

N13

N15

N17

N19

N14

N16

N18

N20

TOP

VIE

W

FRO

NT

VIE

W

FRO

NT

OF

BU

S

Bu

s Fl

oo

r Le

vel

10

40

5

50

0

Pas

sen

ger

RH

P

asse

nge

r LH

10

40

5

K Type Thermocouples VIEW FROM FRONT END OF BUS



Ambient Temperature: Date:

RH:

N1 N2 N3 N4 N5 N6 N7 N8 N9 N10 N11 N12 N13 N14 N15 N16 N17 N18 N19 N20 N210.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

11.0

12.0

13.0

14.0

15.0

16.0

17.0

18.0

19.0

20.0

21.0

22.0

23.0

24.0

25.0

26.0

27.0

28.0

29.0

30.0

Air

velocity at

vent (m/s)

Avg.

Temp

Passenger nose level temperature (°C)

AC Performance Test on Bus

Time

(min)

Avg Vel

Anexure B

AC Performance Test - Sample Format

* Continue recording the temperatures till 40th minute for Test Condition 2

List of participants of “Urban Bus Committee”

Annexure - 5

Annexure – 03: List of participants of Urban Bus Committee


List of participants of “Urban Bus Committee”

S. No. Urban Bus Committee Member Designation

1 OSD (UT) & e o. JS, M/O UD Chairman

2 Representative from D/O Heavy Industries Member

3 Representative from M/o Road Transport & Highways Member

4 DG, BPR & D Member

5 MD, DTC Member

6 MD, BMTC Member

7 Director General SIAM Member

8 President , ASTRU Member

9 Director, ARAI Member

10 Director, CIRT Member

11 Prof H M Shivanand Swamy,Executive Director CEPT Member

12 DG, IUT Member

13 Mr. Ajai Mathur, MD, UMTC Convenor

14 Laghu Parashar, UMTC Member

15 Manjiri Akalkotkar, CEPT Member

16 Vivek Ogra, VbSoft Member

17 Amit Bhatt, Embarq Member

18 Director, Gets Technology Solutions Pvt. Ltd. Member

19 Executive Director, Castmaster Group Member

20 One Representative from Tata Motors Ltd Member

21 One Representative from Ashok Leyland Member

22 One Representative from Swaraj Mazda Ltd Member

23 One Representative from Volvo Buses Ltd Member

24 One Representative from JCBL Ltd Member

25 One Representative from Eicher Motors Ltd Member

26 One Representative from Sutlej Motors Ltd Member

27 One Representative from Corona Bus Manufacturer Ltd Member

28 One Representative from Mercedes Benz India Ltd Member

29 One Representative from Mahindra Navi Star Automotives Ltd. Member


Government of India

www.moud.gov.in

April, 2013

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